“I’m sooo bored! Honey, make it do something!” Tori whined, staring at the mass of dark yellow, spotted hair, barely visible behind the inner walls of the enclosure. It was the last in a long line of zoo exhibits that seemed to have no intention of entertaining the couple. No matter what animals Tori tried to spot in their cages, none seemed to be active in the mid-afternoon sun!

Tori was not interested in the zoo, having only been there as a kid once prior and having no particular memories of the event. When she’d received two free tickets from her aunt as a present for her 18th birthday, she’d almost thrown them back at the old woman’s face! She couldn’t even return them for money as they’d been a final sale at a special promotional price. 

After some coaxing, her boyfriend, Josh, had finally convinced her to use them to visit the zoo. It was his idea to spend the afternoon as a date of sorts. In truth, he’d rather a date that might end in him getting lucky. Both were still in their senior year of high school, and Tori still lived with her stereotypically overprotective father. Any ‘mundane’ dates got him in the old man’s good graces and set the stage for more intimate encounters in the future!

The afternoon was proving to be far duller than either had anticipated. It was such a disappointment to realize that they were not only sleeping, but sleeping out of sight! The couple passed lions, tigers, hyenas, elephants, and even deer and zebras that weren’t anywhere in sight of their viewing areas! 

By this time, Tori was getting more than a little impatient. It was near the end of the day, and each habitat they had visited was just a further disappointment. She haphazardly read that this pen housed a single Amur leopard. He was a male, far older in captivity than his species was expected to live in the wild. Blah Blah Blah!

“You stupid cat! MOVE!” She yelled, not caring that other guests could hear her. Josh felt a little embarrassed about his girlfriend’s outburst, but thankfully, no one was around to notice. 

Yet he was not prepared to see Tori bent over to scour the ground for small stones. “Hey, what are you-” he started to ask. Before the words could leave his mouth, a rock was already sailing through the air, aimed at the cat. 

“Get your phone ready, babe!” she exclaimed as the first one sailed through a tear in the mesh and hit a tree within the habitat with a thunk. Her aim wasn’t the best, but she figured it was near enough to the animal that it would at least rouse its attention.

Something about the idea didn’t sit well with Josh, but the rocks were small, and there didn’t seem to be anyone around. Besides, if the cat did get up and hiss at them, or something, then it would make for a great video!

Tori took aim once more, and Josh was impressed to see the small stone sailing through the air to hit the cat in the flank. No noise could be heard, though the animal’s skin did seem to twitch in irritation. Muscle memory set in stone, Tori let the remaining rocks fly, each of them hitting the cat and triggering a corresponding series of twitches. The cat, sadly, didn’t seem to care. Its dense fur was likely a sufficient protective cushion against the impacts. 

“Bullseye! Take that, you lazy fuck!” Tori exclaimed, using the cat’s spots as a kind of guidepost. Josh continued to look on, waiting for the cat to move so he could get it on film. 

So focused on the animal, Josh barely noticed that his girlfriend had picked up a much larger rock to let it sail through the air. Her throwing arm had improved, and the stone hit the cat’s body with a hard thunk. This one seemed to hurt the leopard, who hissed in irritation, roused from his sleep. 

“Hey, fuck off! Don’t hurt it!” Josh hissed, not wanting to get in shit with the zoo management. He gazed around carefully for a zoo employee and thankfully found none. 

His words had little effect on his lover as she scanned the ground for another large stone. “Keep the camera ready! I almost woke it up!” Tori hissed as her fingers closed on her weapon. “I wanna see the fucker do something!!” 

Taking aim once more, she let the next rock fly, hitting the tree right near the cat’s head. The ricochet finally made the cat stir, its eyes rolling open to regard the monkeys pelting it with stones. Yet Tori’s next rock was already sailing through the air, and it struck the animal directly on the head. 

“I got it! Get the camera on it!” Tori squealed, watching the cat as it opened its mouth, revealing impressive, yellowed fangs. A hiss escaped its muzzle as its wide eyes regarded the pair of aggressors with an almost human level of annoyance. 

Finally getting the reaction she wanted, Tori kept her eyes on the leopard as she scoured the ground for more stones. The cat had gotten up at this point, slinking forward cautiously as though stalking her. Tori laughed audibly as her hands encircled three more rocks. With the layer of fencing between them, the cat’s pissed-off display was fruitless in intimidating her. 

“Yeah! Take that, you stupid old cat!” Tori yelled as she threw the three stones in sequence. Two more hit the cat around the face and neck, and the beast hunched down before running forward, claws extended as a yowl escaped its pulled-back lips. 

“Film it, film it!” Tori yelped as the animal thrashed angrily against the cage, clearly pissed off. Tori scoured the ground for more stones, but the animal was pacing around the cage, impossible to hit now in its aggressions. 

Ecstatic at the reaction, Tori rushed over to the cage, trying to get the cat to stalk her movements. The leopard followed, hissing and swiping in vain at the metal mesh of its home. Desirous to irritate the cat further, Tori grabbed a long branch, dropped from one of the overhanging trees, and looked for a spot through the cage to poke at it. She struggled to push it past the barrier in range of the cat, but her nimble fingers made it work.

“Hey, that’s enough, you’re gonna get us in shit!” Josh yelled as he ran over to her. He hoped that Tori would finally feel like she had enough and leave with him. Still, he kept his phone on the cat, wanting to film its movements. 

The tip of her branch poked into the inner wall of the mesh, and the cat hissed, swiping at it with his outstretched paw. Tori was reminded of playing with her cat at home and teased it eagerly, happy she was making the cat do something. 

It did not take long for the cat to swat the stick hard, breaking it in two and pulling Tori towards the cage. It kept its gaze on the woman, hissing angrily before turning itself around. Noticing the movement out of her periphery, Tori searched for a branch more rapidly, wanting to poke at its backside and aggravate it further. It served the cat right for being such a lazy fucker!

She was hardly aware that the cat’s tail was raised, exposing a bright pink-skinned anus and a small, barbed cock sat below dangling furry balls. Tori raised her head, branch in hand, and ready to poke at the cat. Yet as she did, she was hit square in the face with a sudden spray of urine. 

“Ah, fuck! Gross!” she tried to yell, but that only allowed the leopard’s piss to hit her square in the mouth, making her gag from the acrid taste. 

Josh was at her side by now and hardly had time to react to the grotesque display before he, too, was hit by the leopard’s spray. The cat seemed to strike his face with pinpoint accuracy, getting him in the mouth as Josh tried in vain to raise his hands to shield himself from the pungent piss. 

Both teens were gagging at this point, trying desperately to rid their mouths of the foul flavor. Neither noticed the leopard, seemingly done with its revenge, heading back into its den and out of view. 

“Fuck Tori, that’s rank!” Josh gasped, all of his senses overridden with the horrid taste. The cat’s piss filled his nose as he pointlessly tried to wipe it from his face. Josh only succeeded in getting the stale piss in his eyes, making him yelp in pain. He wandered off to the side, head between his legs, trying his best to spit up as much of it as he could.

Tori, too, was struggling with the rank scent of urine assaulting her senses, doing her best not to vomit right there in the path. The pungent stench hung heavily in the air, more potent than any animalistic stench that she’d encountered to date. Tori wanted to speak but didn’t want to risk getting more of the rank fluid in her mouth. Yet the scent was already so pungent she could taste it regardless. 

Reaching helplessly into her purse, she found not even a scrap of tissue to wipe away the stink. Frustrated, she ran off down one of the trails in search of a restroom. Straggling behind her, Josh gingerly shielded his eyesight from the waning sun, not wanting to rub more piss from his hands into his eyes than could be helped. 

To Tori’s relief, there seemed to be no one else around as she made her way through the trails. An announcement rang over a distant speaker that the zoo was closing in half an hour, but she had no intention of getting anywhere near an exit reeking of leopard urine. 

At last, her desperately scanning eyes fell upon a washroom, and she stormed inside, eager to be rid of the odor clinging to her body. Yet, the enclosed space only served to accentuate the smell. Tori gagged a little, the cloying stench perforating around the air and making her feel a little dizzy. 

Bracing her hands on the sink, Tori did her best to breathe through her mouth, trying to calm herself. As she did so, the stench began to fade from her nose, even though her head continued to swim. It should have caused her some minor relief, yet her nose immediately flared reflexively. The moment the cloying stench was lost from her, her body seemed desperate to take it in. 

What the hell was wrong with her? The piss covering her face still stank. That had not changed. Yet the more its odor was denied from her, the more she seemed to crave it. The stink carried notes of a potent, musky quality, one that she couldn’t quite place. It drew recollections of scents of sweat and sex from her own experiences. How was that possible from the stench of cat urine?

A few more sniffs sent a shiver through Tori’s body, and despite herself, her crotch began to tingle. A moan escaped her lips as her hand slowly lowered towards her suddenly needy genitals. A simple brush against the flesh made her shudder violently, her entire body quivering with need.

Senses finally acclimatizing to the heady stink in the room, Tori allowed her hand to start rubbing herself through her shorts. Each minor stroke sent tremors through her body, making her crave more. Her arousal was beyond reason, especially given the present circumstances. Any fear of doing such a thing where she might be discovered was erased with the sheer pleasure the action brought with it. There was no denying how damn good it felt to touch herself, or how badly she needed it!

Thoughts drifted to the leopard that had sprayed her. Initially, she assumed the mental images had to do with the pungent stink the leopard had left on her. Yet even that did not explain how the cat seemed to pervade her thoughts. Not only was the image firmly in her mind, but the more she focused on it, the more her arousal grew!

The mental image started to shift as she focused on every detail of the beast she could recall. Even though she had only glimpsed it for an instant, the creature’s feline prick stood out to her sensibilities before it sprayed her with its scent. Tori found herself imagining its contours, the pointed, barbed tip taking up every fiber of her imagination. 

The image of the older cat left her mind, replaced by a male in his prime. Sleek muscles covered with long, luxurious, golden-orange fur, and a stiff, barbed cock for breeding and continuing his lineage. Another cat was soon added to the fantasy, a female of similar stature. The female’s sex was on full display, swollen and puffy and dripping its own odors to signal her readiness. 

The powerful image served to accentuate Tori’s need as her hand played over her shorts, teasing the fringes of her sex. She could almost feel the cat’s weight on her back as it gripped her sides. Her vagina continued to moisten as the tip of the cat’s prick brushed against her tight folds. It only just now occurred to her that she was the leopard in the vision, allowing herself to be taken by such a virile male. Even that realization did not deter her from the fantasy as she continued to relish stroking her sex. 

The images sent a wave of heat through her body, and Tori began panting, sweating from the stifling air in the washroom. Reflectively, she pulled off her shirt, leaving her clad only in a bra as her hands moved across the waistband of her shorts. Tugging them off in a fluid motion, only her stained underwear remained as Tori allowed a finger to dip below the band. The sensation was electric; Tori allowed a moan to escape her lips as she teased the fringes of her sex, eventually moving inward in a circular motion.

Any thoughts of hesitation about performing an act where someone might walk in on her were quickly erased. She braced herself against the sink as her touch sent minute waves running over her body, each coming faster and faster as she pleasured herself. The heady stench in the air, riddled with leopard pheromones, served to be a more potent aphrodisiac than anything she had ever experienced.

Unbeknownst to Tori, the tingles seemed to be centering on her coccyx, pushing against the bone within. A low moan escaped her lips as the fused bone seemed to break from the inside, painlessly pulling apart and pressing against the skin. A small lump poked from her back, yet Tori was too engrossed in her self pleasure to notice.

Skin reddened by the presence of the lump, the remnants of her coccyx continued to poke insistently at the flesh, requiring room to develop properly. The bones knit together as rapidly as they broke apart, almost going unnoticed in Tori’s reverie. The pattern of expanding and reconnecting, in turn, increased their total number far more than her former fused seven.

The lump of reddening flesh continued to expand, as though a growth or pimple was forming under the skin. Yet Tori’s body had no time to mount an immune response. The lump was simply filled with fat, the usual pus of dead white blood cells absent. 

The sensations only caused her to feel dull throbbing as the flesh protruded from her backside about an inch now. Yet it was lost in the sea of ecstasy that her masturbatory experience brought with it. Tori’s thoughts were torn between the preconceived visage of leopard mating, and the hormone laced fluids that hung cloyingly over her as she continued her self-exploration.

The lump had grown two inches now, thickening at the base as new muscles stretched from her hips and back to fill the space. The bones themselves continued to separate; whatever force that was changing her allowed sufficient calcium to fuel their growth. By the end of the process, 21 fragments had formed from the original seven, each growing larger and extending the protrusion as new muscle and nerves linked around them.

Yet Tori was only aware of her encroaching orgasm as her fingers ran insistently over the flesh of her clit. Both hands were on her sex now, one focused on her pleasure center while the other teased the insides of her sex, a vain attempt to stimulate her opening. The mental image of a leopard pounding away at her sex made her crave penetration. 

The growth behind her continued to expand, new coccygeus muscles stretching out to its tip as it started to move. The newly formed neural connections sent a shiver up her spine, making her cry out as her sex simultaneously spasmed with orgasm. “Uggg…AAAHHH!” Tori yelled, gripping the counter with one hand while her other strived to coax every bit of orgasmic pleasure from her body.

Only the minor itching was sufficient to wake her from post-orgasmic bliss. It seemed to be emanating from above her tailbone, further from her body than she had expected. Trembling fingers reached out to brush the skin of a growth that had not been there before. Worse, centering on the warm skin just above her tailbone was the presence of what felt like sprouting hair!

Tori jumped up then, startled by the alien sensation. As she did, the series of new muscles continued to twitch, moving back and forth as she felt it bush against the counter. Twisting around to look in the mirror, Tori was greeted by the sight of what she could only perceive was a 4-inch tail sticking out of her backside. The base of which was peppered with short, deep yellow hair. 

Rather than being immediately terrified, a stunned Tori reached out with her new muscles, feeling the new appendage twitch at her prompting. It carried a surprising level of flexibility, especially at the tip. The electrical signals reaching her skull were a little disconcerting but came with more fascination at the moment than fright. 

The base of Tori’s new tail was thickening, the skin warm as fat swelled within. It hung heavily from her backside, swaying back and forth as it passed 6 inches. The itching continued to caress the base, tickling the underside as her pink skin became harder to see. Fur wrapped around the circumference, spreading towards the tip as fast as the growth was lengthening. 

Tori couldn’t keep her hands off the growth, running them up and down as more of its surface became enveloped with the deep yellow hairs. They remained short at first as they burst out of every pore. Yet soon, longer hairs lanced in between them, covering the softer hairs as her tail grew heavy. 

Most of the fur was a dark yellow, almost orange, while the underside of her growing tail was coated with contrasting white. The most distinguishing feature was the black circles that seemed to poke from in between the fur. Blossoming into unbroken rosettes, they ran all the way down to the twitching tip, covering it with black fur. The more spots that formed, the more evident it became what sort of creature such fur and tail belonged. 

The mental image of an Amur leopard sent a surge of lust through her loins once more. Nostrils flaring, the rank stink of leopard urine still hung heavily in the air, making her sex moisten. Had she not been shaven, her pubic hairs would be soaked through by now. Yet even as she stroked the damp flesh, the soft texture of hair met her fingers as more leopard fur took root. 

Despite clearly being the catalyst of her changes, Tori was under the thrall of the rank leopard musk hanging in the air. A sliver of her mind told her she should stop, that touching herself was causing more soft fur to coat her groin. Yet each time she attempted to pull her fingers away, her loins forced an intense ache through her entire body, begging to be gently caressed. 

The clear image of a leopard in her mind did little to help matters as she continued to envision a virile male on her back, humped away with a stiff feline prick. Though it was the zoo’s male leopard that had spayed her, his was not the visage that haunted her thoughts. She needed a younger leopard, one strong and virile and capable of filling her womb with the start of her cubs. Wait, cubs? She didn’t want to… 

Yet, she could not shake the notion once it crossed her thoughts. She wanted to take a feline cock as many times as necessary to ensure successful copulation. Her loins cried out with need, driving her to rub her clit. The only thing better would be to have that cock from her dreams rubbing back and forth over her cunt lips instead!

Lost in the reverie of self-pleasure, Tori was hardly aware her lower back was itching, providing her ass with a light coat. Her tail was fully coated in Amur leopard fur by now, even as it continued to extend from her back. It was well beyond ten inches now, though it still had a long way to reach a proper leopard’s length. Long guard hairs accentuated her shorter, softer coat, designed to protect her skin from the elements. The white fur spreading from her groin moved slowly from her underside to meet the hair over her backside. Even her thighs were starting to sprout a few sparse patches of orange-spotted leopard fur. 

Tori didn’t care. The itching was a distant second to the pleasure that caressing her sex seemed to grant. One of her damp fingers traced her juices across her leopard fur, and she loved the sensation of her need coating her skin. She was eager to feel more fur sprout from the skin, to cover herself in that lovely coat to match the mate in her mind. The thought of being more like that cat was enough to bring her over the edge!

“AAHH…again! More! MORE!” she yelled as her sex quivered and sent her into orgasm. 

Grasping the counter for support, she felt herself lowering down on her knees. The position was surprisingly comfortable as she writhed on the floor, savoring the sensation. The itching of further fur growth only served to draw out her release as her eyes fluttered shut momentarily in contentment. 

Meanwhile, Josh had finally gotten his bearings and was racing down the trail after his girlfriend. What the hell was she doing, running off near closing?! The voice over the speaker reported only ten minutes till closing. Josh hadn’t noticed a soul as he made his way to the nearest washroom, assuming that was where Tori would be. Though she was likely as disgusted as he, there was little she could do to wash herself in a public restroom. Especially with such little time before they were locked in overnight! 

Not caring about social convention, Josh burst into the woman’s washroom, the sounds of someone inside more likely to be Tori than anyone else. Indeed, Tori was hunched over the sink as he entered, her back to him. But something was horribly wrong. His eyes did not skip over his lover’s clothes strewn over the bathroom floor. Yet, they were drawn towards the twitching growth on her backside. Its dark yellow-spotted fur was frighteningly reminiscent of an Amur leopard’s tail!

“Tori… what the fuck…?” he muttered, staring in disbelief. At first, his mind tried to play it off as some sort of prosthetic or prop. Yet the way it moved was far too life-like for any animatronic. Its continued growth from her spine and the spreading fur was proof that it was not something he could rationalize away. 

The scent in the room assaulted him full force just then, and he gagged a little. The stench of piss was still strong, but there was another fragrance in the air that Josh found more familiar. He recalled something similar from the bedroom where he’d occasionally taken Tori, along with his past few lovers. The scent of female sex and masturbation that he’d come to find arousing. 

His eyes drew down to Tori’s fingers, a few still dipped into her panties as she moaned and writhed on the floor in post-orgasmic bliss. Underneath the band was luxurious white fur, seeming to spread over her pussy and groin. More fur poked out from the sides of her panties, covering her hips and her lower back. The sight reminded him of a time-lapse video of grass sprouting from the earth, far faster than such a spread should be possible. 

“Tori, you’re… fuck…” he muttered, reaching down to rub the base of the tail. To his shock, the skin felt warm, clearly alive, and part of her.  

His fingers were greeted with soft fur, reminding him of a cat’s. It, too, was warm, tickling his hand as longer guard hairs continued to lance up from his touch. He should have taken his hand away, but the sensation of growth was too bizarre. Josh found himself rubbing the skin to see if his touch was indeed causing more fur to grow. 

The contact finally roused Tori from her post-orgasmic reverie. “Josh… wha-… oh, please… more!” Tori moaned, rapidly thrusting into her panties as the damp stain on their front grew more pronounced. 

The sight of his girlfriend pleasuring herself, while normally arousing, was far too bizarre in this situation as Josh continued to absentmindedly scratch at the base of her tail. The hairs were growing longer, spreading slightly up her back in a pool. Yet curiosity, more the fear, spurred on his actions. Hands were now encircling her growing tail, partially to explore the texture of leopard flesh and partially to see how much it might extend her changes. 

“Fuck… Yes!” Tori cried out as she went into orgasm once more, her sex seemingly insatiable. 

This release was even more intense than the previous ones due to the presence of her lover. Though the stale scent of leopard piss was still strong in her nostrils, another smell started to invade her awareness. It was a familiar scent, one of her boyfriend’s. It only served to combine with the heat in her loins and the lust that the odors had initially triggered. 

“Tori… wh-what is this?” Josh finally thought to ask. It was not only the changes that had him confused, as impossible as it was for him to comprehend the growth of such a thing. The look in her eyes, glazed over and distant, made him reach out to rub her cheek, trying to get her attention. Why was this turning her on so much? It took every ounce of his will not to vomit from the stifling stench of urine in the bathroom!

Tori’s focus turned to her boyfriend, a grin slowly forming across her features. Licking her lips, she reached up with one hand. Josh lowered his to take it in kind, assuming he was to help her up. Yet Tori only used it to stabilize herself as she reached up to grasp his jeans. With practiced precision, she quickly undid his belt and button, making them drop slightly to expose the fabric of his underwear. 

“Tori, what…? “ Josh began, but the sensation of her fingers reaching into his pants left him stunned. Normally, the action would have greatly aroused him. He loved how Tori took to dominating him in the bed, taking what she wanted from him, and showing how much she needed it. But in this circumstance, with the stench of piss and the sight of her changing body, Josh could not lower his heart rate, much less maintain an erection. 

Yet the longer he stood in the bathroom, drinking in the miasma of scents, the more his thoughts began to jumble. There was something about the odor in the air that infuriated him. It was beyond the burning harshness of chemicals and waste. It was as though it threatened him, somehow. It was beyond fathoming that the prevailing odor of urine could make him feel this way. It left him standing stunned, trying to process the new information. 

All the while, Tori was pulling down his underwear, allowing his modest, uncut cock to hang in the stale air. It carried with it a musky quality of its own, and Tori curiously licked the tip, making her lover shiver. Lost as he was in his self-reflections, Josh found it hard to resist arousal as blood shot down into his penile tissue, bringing him to a swift erection. 

Josh wanted to pull away from the sudden attention, feeling awkward. The stench of urine still hung heavily in the room. Yet, to his disgust, he was starting to become accustomed to it. More than that, the hormones it was laced with made him eager for the attention he was getting. Even with such potent pheromones in the air from another being, he was the one getting attention… 

Josh hardly had the mind to argue as Tori looked up into his eyes and dove onto his penis with gusto. A moan escaped his lips as his penis was taken as far back as Tori dared, her tongue teasing the tip the entire time. 

Within a few moments, Tori’s skilled mouth moved up and down, finding a comfortable rhythm as she eagerly sucked her lover off. The first few times they had experimented, her jaw had quickly gotten sore from the oral act. Now, she was used to the size of Josh’s penis from when they could not risk penetrative sex. 

”Oh fuck babe, don’t stop!” Josh moaned, taking her head in his hands as he encouraged her ministrations. 

The texture of her hair was familiar, as he often encouraged her in such a manner. But, as Josh ran his fingers through her dark locks, he was shocked to feel them thinning. Panic raced through his mind as what felt like clumps of human hair fell away, pooling on the floor around them. Soon, his fingers ran over a bare scalp, seeking to confirm his suspicions. Was Tori sick?

Just then, a prickling of tiny hairs soon grew at his touch, forming a full coat of soft fur. The texture should have caused further panic, yet Josh felt himself start to relax. The sensation quickly became akin to the pelt he’d felt on her tail and back.

Lost in the amazing sensations of being sucked off, Josh’s closed eyes had no way to tell the hairs were turning yellow-orange to match the fur on her still-lengthening tail. Those same black rosettes sprouted from the remaining hair, giving her more signature leopard spots. Even the skin underneath was altering color akin to her fur coat and spots.

Tori was momentarily panicked to see her human hair sliding down her face. Yet the tingling of her new leopard pelt delighted her as it peppered her bare scalp. The wonderfully soft undercoat was quickly enveloped by longer protective fur. 

Tori winced a little as several dozen pinpricks erupted from the space near her nose as she continued to suck with fervor. They irritated the skin momentarily, though Tori’s hand inside of her furry, wet pussy quickly erased the discomfort. Still, she was vaguely aware that they continued to lance forth from the flesh, clearly different than the soft fur covering most of her body. 

Of more urgency was the changing sensations of the penis inside of her mouth. It seemed as though her lover’s cock was starting to deflate, growing smaller even as it continued to leak its copious fluids. Worried that her ministrations were inadequate to keep her boyfriend erect, Tori started to suck more rapidly, reaching up with her other hand to massage his testicles and groin. 

She needn’t have worried. Her lover’s member, though smaller, was just as erect as ever. Though its fluids were starting to alter in flavor, Tori found the taste more pleasant. She continued to suck faster, eager to drink down his load and satisfy her own lusts. 

Josh was hardly aware of the alterations to either of them, mind enveloped by the waves of pleasure emanating from his dick. It seemed as though Tori’s mouth was growing larger around his cock, making Josh a little uncomfortable. But he did not feel his member soften. In fact, the sensitivity in Josh’s penis seemed to increase, making him all the more eager to ejaculate. 

Rubbing her hair and enjoying its softness, Josh started to pull Tori’s head towards his groin, urging her faster. It seemed as though her mouth was losing its grip on his penis. Though both were unaware of it, Josh’s five-inch member had shrunk to four inches, more aligned with the cat whose hair coated Tori’s scalp and backside. 

Neither of them was aware of the alterations to Josh’s prick. Tori was distracted as she continued to suck as she would a tasty treat. The tip grew pointed, the glans tapering as its circumference thinned. Its head melded into the shaft as it changed color to the pink shade of a feline’s member. 

Tori winced as several hundred rough edges suddenly grabbed her tongue, rubbing against it the wrong way as she pulled back in shock. It was as though it had been caught on a carpet of sandpaper, threatening to tear her tongue if she continued her oral ministrations. 

Yet she only had to pause for a moment as a series of tingles emanated from her tongue, the development of minute feline barbs that quickly coated its surface. Realizing that she no longer felt pain, she started to suck again with renewed enthusiasm before Josh even realized she had stopped! 

Meanwhile, her massaging fingers had a similar effect on her boyfriend’s groin. The slight itching went unregistered as several hundred hairs poked from the surface like weeds. They were met by several hundred more, lacing longer than the developing undercoat of white fur. Though the soft pelt was peppered with light black rosettes, it remained largely white, matching the white leopard fur that adorned Tori’s own groin. 

Leopard fur crawled over the flesh of Josh’s balls as Tori’s hands massaged them. Though the penis they were attached to was shrinking, their fleshy sack grew larger. The testicles within swelled with leopard cum, a load far heavier than the human Josh was accustomed to. The soft hairs quickly spread as it ran up his perineum, coating his groin and even his butt cheeks with the luscious fur. 

Tori’s mouth caught on something else as she felt her boyfriend’s cock start to throb with urgency. It was as though his cock was covered in a second layer of skin, one that was separating and spreading down his smaller prick as she sucked. The growing fur covering its surface caught on the barbs on her tongue, but Tori was unbothered, especially with the promise of the load that was about to grace her mouth!

Even with the bizarre nature of the sensations swelling from his groin, Josh felt his end nearing and didn’t want to hold back. Tori was sucking faster now, her hand on her own sex matching the speed as her fourth orgasm of the evening neared. Josh held onto the fur of her head, guiding her mouth to suck faster and faster as his balls tensed and he prepared to blow his pent-up load. 

“Oh fuck, babe! Yes! YES!” Josh cried, not bothering to pull out as his cock spasmed, and he shot several thick wads of jism into his lover’s mouth. Not caring about the quantity, Tori swallowed her lover’s gift, savoring the salty flavor in a way that she never had before. 

Her own orgasm was not far behind. The knowledge of pleasuring her lover made her cunt lips clamp on her fingers, and pulled them inside to tease her clitoris. The tightening seemed to shrink her sex’s opening somewhat, but that only served to accentuate her pleasure as the orgasmic waves washed over her. 

Tori felt her vision go white for a few moments, the constant waves of ecstasy giving her pleasures beyond her imaginings. Though she had only been sexually active for a short time, it was hard to imagine it possible to surpass the ecstasy that her new fur and lovely tail could provide her. 

Licking her lips and savoring the flavor of her mate’s seed, Tori finally let her eyes open, drinking in her lover’s form. She’d intended to look up at him with a smile, but the sight of his retreating sex made her gasp in shock. 

Gone was the penis that she’d enjoy pleasuring at every opportunity. In its place, nestled in a furry crotch that mirrored her own, his penis hung limply, unburdened from the load in his testicles. A pink, tapered, barbed cock was steadily sliding back into a bestial cocoon of warm, white fur. His balls were larger, the skin around them dark, not unlike the ones that the Amur leopard had harbored. 

The sight brought her attention down to her own crotch, her cunt lips still leaking their fluids as her muscles spasmed with tiny tremors. Her sex, too, was changed, nearly invisible beneath the carpet of white-spotted leopard fur. Though she had no frame of reference, it was obvious that her sex was the female equivalent of the leopard that had sprayed her. 

Tori’s attention was drawn to the growth sticking from her back, now twenty inches and still creaking as it acquired the proper leopard length. She had known she was developing it, but…why had she not panicked? Surely, it was unnatural to allow a tail to grow from her spine, no matter how soft the fur was, and no matter how lovely the appendage appeared… 

“Oh Tori, that was… Huh?” Josh said, opening his eyes after coming down from his amazing release. 

Something was wrong. Tori’s tongue had been far too long and flat. It had been rough, catching on something matching on his own dick. And why had his penis felt so small?

Josh’s eyes fell upon Tori’s face, and he nearly screamed, realizing what had become of her. Like the newly-grown tail, her head was coated in leopard hair, which reached down to cover parts of her cheeks. Josh could see her panting tongue was flat, coated in sharp, off-pink bumps. And were those whiskers on her cheeks?

The sight of his lover’s changes was a drop in the bucket when he began to realize what had happened to his sex. An intense itching drew his hand down to his bare crotch, running into that same fur texture he had felt on Tori’s head. 

“What the hell?! What did you do?” Josh yelled, taking out his anger towards his lover. His thoughts were racing too much to restrain himself. What the hell had happened?! Where was his dick?

Tori ignored the tone, however. As scared as she was, it was nearly impossible to find the changes to her form unpleasant. Josh, despite his anger, still looked sexy as hell. The image of his penis, in tandem with his scent, reminded her of the leopard she wished for in her fantasies. The realization that he was healthy, young, and housed virile cum in his leopard balls sent another shiver through Tori’s loins. 

Tori tried to shake her head from the trance, partially to help her lover’s struggles. Josh was frantically rubbing at his loins, staring at his lover incredulously as she remained nonchalant over the whole thing. In truth, she was scared of the changes, but… 

The sounds of the bathroom door opening sent both of them into silence. Panicked, they both looked for an escape, to hide their presence from whoever had entered. But even if they dove into one of the stalls, it was impossible to hide their clothes strewn around the floor or to make the action in silence. 

“Fuck, that’s rank! Who let one of the cats out…oh shit!” Came a male voice as both Josh and Tori turned to look at a man in a zoo staff member’s uniform. 

Both went to cover their changed genitals, fearful of the man’s reaction. Surely, the sight of their feline features would send him screaming, much to their shame.

Yet, the expression on the man’s face was not one of fear or disbelief. Rather, he seemed annoyed at their presence in the bathroom. Like the sight of people turning into leopards wasn’t out of the realm of experiences he was used to, but rather one that he didn’t want to have to deal with today. 

“Fuck, Rodger! We’ve told him not to spray the guests. He’s been so good about it, too. You must have really pissed him off…ha!” he laughed at his own terrible joke. 

“What the fuck?! What’s going on?!” Josh yelled, his rage turning into exasperation. It was about time somebody explained something to him! 

“Oh, I’m so sorry! You aren’t willing, are you? Well, of course, you’re not. I would have heard about it. There were no conversions scheduled today. And you wouldn’t be in a bathroom, you’d be in your new cage! Shit. It’s been way too long since there’s been an accidental conversion.”

“You must be terribly confused. I’m sorry, we don’t have a precedent for this kind of thing, not even in the manual. Let me think…” the man said before reaching down into his pocket for his phone. Both teens waited with bated breath while the man dialed a number, hopefully, to contact someone who could help them. 

After a few moments, the man put his phone away. “OK. So, I’m on my own here. I’m so so sorry. I’ll do my best to try and explain the situation. I don’t really know what to do, honestly.”

“Long story short. This zoo runs on magical energies. Nothing like parlor tricks, or anything. It’s…well, it’s very limited in what it can do, but what it does well is turn people into animals. No, no, not against their will. We aren’t kidnappers!” he finished, noticing the looks of terror on both Josh’s and Tori’s faces. 

“It’s a sort of rite of passage. We offer it to any of the staff or anyone in the public who wants it. Those who partake of the magic choose to live in the zoo’s care, usually giving their fortune in a donation so they can have the best possible life. Some people just really love animals and want to live a simpler life without wilderness risks. Some want to help by repopulating endangered species, and some want to educate the public by making it easier to interact with actual animals.”

“Not all the animals in the zoo were human, but a lot were. Like I said, most were willing. It’s nearly impossible to change someone against their will, especially not all the way. They have to want it and then come into contact with the animal in question. That’s how the magic works. If the person desires to change, and are in the proximity of the species, they will.”

“But, as you might have guessed, there is another way the magic can work. If the animals have a strong desire to change someone, then that can initiate the process themselves. They have to make contact with the participant, but even something like, well, being sprayed on, will do the trick.”

“Our animals, even the ones that were born that way, are intelligent. It’s happened once or twice that they’ve initiated a change on their own desires. Robert, our Amur leopard, once changed a man who was harassing him. We had to transfer the poor guy to a new zoo because he nearly went mad,” the man finished. Both Tori and Josh went white in the face at that. How could they have known?

“Now, if your intention is not to spend your lives as leopards, then don’t worry. Though the process has started, it is still dependent on desires. If you don’t want to change further, you won’t. It’s that simple.” 

“So, that being said, you’ve got two choices, the way I see it. If you resist your new urges, you will change back eventually, likely before morning. When you do, our guard will let you out of the premises. Provided that you don’t return to the zoo, you won’t change into leopards again. Do be careful about that. The magic still lingers if you come close enough, and it can start the change again.”

“The other option, depending on how you feel towards leopards, is to let yourselves change fully. We have a place for a mated pair, and you’re more than welcome to join our family. Once the change is done, you’ll be with us forever. Judging from the smell,” he finished, wafting the air in front of his nose. “You seem to be enjoying the pleasures of leopard flesh. It’s understandable, from my experience.”

“Unfortunately, I can’t get a hold of the bosses, but I don’t think they could help you, anyway. There’s no way to change you back unless that’s what you want. The choice is yours.”

“I’ll be closing up soon. I can leave a note with my bosses if you both want to change and stay. Either way, you have a few hours to choose. I trust you understand we can’t let you leave mid-change. Not only would it alarm the public, but you might keep changing outside the safety of the zoo. We wouldn’t want you to come to harm!”

“Well, have a good night, I guess. That’s all I can say. Sorry, either way. I’m sure it’s not what you wanted, but there are worse animals to be. Either way, I’ll see you in the morning!” the man said as he left the room.

Both Josh and Tori found themselves standing in stunned silence. The story was almost too bullshit to believe. If they weren’t currently covered with leopard fur, that is.

Still, Josh grew excited from the man’s words. They wouldn’t change if they just ignored the urges and left. This nightmare would be over!

Josh went to say so but turned to see his words fall on dear ears. The sight before him made him pause as Tori seemed to stand there, eyes in a trance. Tori’s hand traced down her belly, rubbing the space right above where the fur had sprouted. To Josh’s horror, it seemed as though the pelt was spreading at her insistence, tiny hairs peppering any human skin before longer, white fur covered it entirely. It was as though she wanted the process to continue!

“Tori, we need to get out of here! Stop touching yourself!” Josh cried, reaching out to grab her. Yet he stopped, remembering how his proximity to her had initiated his own changes. He didn’t want to make things worse for either of them!

Tori heard her lover’s words but remained mostly unaware, her nostrils flaring to drink in more of the heady musk perforating through the room. The stench of the urine had mostly faded, replaced by the reek of her sex and her mate’s. The combined odors in the room made her sex scream out with the need to be pleasured!

Josh stood teetering back and forth as he tried to decide what to do. He knew he had to leave, thinking the fresh air might aid in removing the scents of feline musk that were pervading his senses. But he couldn’t leave Tori to turn into a cat! She had touched herself so much already and would likely change more if left to her own devices. 

Tori’s hand had made its way to play over her sex as the other seemed to encourage the growth of fur over her form. The moment her fingers massaged the fringes of her leopard cunt, a rush of pelt spread down over her legs. It ran up to her belly and even towards her chest. Yet, the itching and discomfort had little ability to quell the satisfaction that ebbed from her sex. The sensation seemed to supplement her pleasure as she reached down to massage her sex with gusto!

Josh tried to step away, but the musk of leopardess sex hit his nose once more, and he drank it in, feeling his own member come to an erection. The ache in his larger leopard balls left him powerfully conflicted. He knew he needed to escape, but…they were so full… 

Reaching down to tease his tip, Josh felt his hands brush over the fluffy fur on his groin, making him moan. Though not as soft as his girlfriend’s fur, it still gave him immense satisfaction to run his fingers through it. He could not eliminate the notion of how wonderful it would be to be covered in a coat of that same fur!

Tori, meanwhile, was enraptured in her own luxurious fur. She craved the sensation of coating her form as she continued stroking herself off. The white coat covered her inner thighs, while the rest of her leg was clad in that lovely deep yellow, almost orange as black rosettes opened like flowers across its surface.

Her tail was now closer to thirty inches and not yet done its relentless march from her spine. It was fully covered with luxurious leopardess fur as more continued to spread up her back. The expanse of fur where her human hair once sat rushed down to meet the growing leopardess pelt spreading from her tail. The two met, giving her backside a rather lovely Amur leopard coat.

Josh’s hand was nearly on his penis now, unable to hold back the needs that were swelling in his loins. Yet, the instant his hands touched his member, he was met with a sharp prick that elicited a surprised yelp from his lips. Looking down at his smaller dick he shockingly realized that it was covered with backward-facing spines! He had a cat’s penis!

Yet the urges crying out from his testicles could not be contained. Josh lowered his hand, more carefully this time, to tease the base. The simple touch sent shivers through his body as he did so. The mental effort it took to find some way to touch himself overrode any notions that he shouldn’t be trying to do so in the first place. Besides, with Tori’s leopardess musk in the air, it was nearly impossible to focus on anything but the maddening arousal!

The only thing that could draw Josh’s focus away from the ache in his groin was a swelling sensation in his backside. It was quickly met with his other hand as he continued stroking himself off. What initially felt like a lump or pimple seemed to swell with accelerated speed. The protrusion poked out of the skin, the bones of his coccyx dislocating and spreading into the growth until it could move of its own accord. Josh was growing a tail!

Tori’s end was growing near, and with it, the exposure of any human skin on her form. Beautiful spotted fur was slowly spreading up her chest, white on her belly and turning to the orange shade up her sides and back. Shorter, orange-yellow hairs erupted from the backs of her hands, spreading up her lower arms and moving to connect with the fur spreading over her shoulders. Lacking protective guard hairs, the pelt sprouting from her limbs was softer, yet no less beautiful than the coat she now possessed. 

The fur across her body continued to lengthen, growing far longer than that of most cats. Her’s was to be a coat for colder climates, designed to protect her from the elements. Thicker hairs coated the insides of her fingers, creating padding to help walk on the frozen wastes. Images of her leopard self at home in such a place played over her thoughts. They made her more eager for the completion of such a fur coat!

Josh, meanwhile, had found a grip on his penis that was suitable to allow eventual ejaculation. Falling into a rhythm, his other hand traced over the growth weighting on his backside as it continued its quest to expand. It had so far to go before it reached the length of Tori’s. Yet the sight of her flicking tail served to eagerly force every inch of the growth from his backside. 

Leopardess musk thick in his nostrils, Josh had no choice but to relieve the lusts in his loins. Human thoughts could scarcely reach the surface through the trance he found himself in. Each gentle back and forth motion made him leak more pre into his hand, bringing him ever closer to the desired release. His balls were heavy, and there was a mate present to eventually take his cum, once she was in position. 

The perception of his coccyx breaking into fragments was but a tingling to the changing man as Josh allowed himself to fully immerse in the sensations. The growth on his backside began to twitch of its own accord, leaving Josh momentarily enamored. He ran his hand over the protuberance, desirous to feel it lengthen. His touch encouraged the patchy leopard fur to continue to erupt from its fresh skin. 

An intense itch ran down from his furry groin, encompassing his thighs as it spread towards his calves and feet. He desired to run a finger through the hair, reminded momentarily of the feeling of touching Tori’s own. Both his hands were occupied, one with his growing tail, and the other from stroking his cock into orgasm. He, therefore, could not alleviate the itching running down his legs. 

Tori, meanwhile, could hardly hold back her own orgasm. The scent of a male leopard and the sensations of fur growth were far too great a temptation. Looking into the face of her lover, she smiled as fur spread from her cheeks and chin, rushing to meet the fur swelling from her chest and neck. 

Though her breasts were intact, for now, they remained bare. Only her lips, her palms, her feet, and her breasts remained void of leopard pelt. Yet Tori found that notion appealing. She would be protected from the elements with this soft fur, and keeping it clean and groomed would occupy much of her time and attention. She would keep it pristine in a manner only experienced by felines!

Yet presently, most of her attention was solely focused on the male before her. She desperately wanted him to mate her, to fill her aching womb with the promise of new life, but she wasn’t ready. He would take her, Tori was certain, when she was the leopard he needed. 

The thought of being such a beast was more than she could bear. Her still-human hand played furiously over her sex, desperate for the brief reprieve from the heat playing over her loins. Yet, most of all, she felt the need to make the fur coat permanent, if orgasm would grant her that!

“Ugh…AAGGGRRRR!” Tori growled in orgasm, an inhuman quality to her voice that made Josh shudder. 

The sound of her slick fluids rubbing against her fingers was soon followed by the scent of fresh release. Josh could hardly hold back with the scent of feminine juices fresh in his nose. He grunted in his still human baritone as the waves of orgasm washed over him, and he spilled his seed onto his hand and the fur of his groin. The release nearly made him fall over, his body clearly not ready to cum that powerfully. 

Slowly, the human Josh swam to the surface, fear flowing through him from the feeling of a flicking tail behind. He was letting himself turn into a leopard! Worst of all, he was enjoying it!

Itching from his groin made him moan, and looking down, his thighs and calves seemed covered in a thick coat. It nearly matched that of the male in the cage from before. His tail audibly creaked as it continued to lengthen independently of the orgasm he just experienced. Worst of all, the ache in his penis had not subsided. It felt as though he could cum and cum again until the change was over!

It was obvious he could not resist the magic if he stayed here. He was a hair’s breadth from touching himself again and allowing himself to lose more of his humanity. Yet, he would not leave his girlfriend. She was more changed than he, but there had to be some way to reach her and exit the washroom without touching themselves further!

“Tori, we need to get out of…” he started, but from the sight, it was obvious that Tori’s mind had not fully recovered from her recent release. She was still touching herself, despite having just cum. There was hardly an inch of human skin still visible! She was still working over her sex in an attempt to change herself more and more into a damned cat!

At her mate’s words, Tori glanced up, looking him in the eyes once more as her hand finally strayed from her groin. Josh felt a twinge of relief before he saw the gaze mirrored in her eyes. They were not the familiar sight of Tori’s intelligence or even her lust in bed. Reflected there was a hunger, a need for sex that far surpassed anything he had ever seen in her expression!

“Tori… Stop…” Josh tried to moan, but she was on him in an instant, leaving him unable to protest at the presence of a willing female. 

Tori smiled, the still-human part of her mind taking his lips in a kiss, which Josh eagerly returned. Yet, it lasted only a moment, the instincts in her mind and musk in the air requiring a different reaction. 

Getting down on her hands and knees, Tori’s tail lifted reflexively, exposing her puffy lips and leaking vagina. Though her body was not equipped for it, the position felt right. It was how she was to be taken by the male that Josh was becoming! Human thoughts blurry, Tori wanted nothing but to take the male’s hot cum inside her and birth his cubs!

The scents wafting off his girlfriend’s needy lips were nearly more than Josh could bear. The pungent musk seemed to swirl around him, beckoning him forward. It was a Herculean task to avoid closing in on its source. Yet, the more he tried to resist, the more his girlfriend’s scent made it increasingly difficult to recall why he was resisting.  

The presence of leopardess perfume seemed to trigger some instinct in the newly changing centers of his mind. The need to mate and procreate overrode any semblance of human cognizance. The primal urge to rut was more than Josh could fight!

Getting down on his hands and knees, he drew his nose towards the source of his entrapment. The sweet leopardess musk, akin to a siren’s call, was more pungent the closer he came. His newly forming feline’s Jacobson’s organ allowed him to better capture her scent pheromones. It redirected them to rewired scent glands in his brain, making it nearly impossible to resist. 

Yet, it wasn’t enough. Even as his nose touched Tori’s moist, quivering cunt lips, he found himself craving more. Josh’s tongue extended of its own accord as it teased the fringes of Tori’s sex. Instantly, Tori arched her hips back. She found the contact better than even touching herself. The tongue’s presence was indicative of the male she had been fantasizing about ever since she’d been sprayed with leopard urine. He could mate her, fill her womb with virile seed and send her insides into orgasm!

Tori’s insistence spurred on Josh’s advances as he lapped at the slick fluids leaking in rivulets. Though he’d normally never enjoy cunnilingus, the flavor of her leopardess sex was sublime. It was even better than the finest beer he’d stolen from his father’s cabinet. He found himself craving more as he licked faster, excited that each lap seemed to coax more fluids into his mouth. He could hardly swallow it all!

A slight numbness assaulted his tongue as its surface was peppered with tiny pinpricks. Had he not been lost in the moment, Josh might have recalled the same barbs he’d felt on Tori’s tongue growing over his own. The tiny spines of a cat’s tongue, used for a variety of daily grooming and feeding tasks. But right now, they were solely focused on stimulating Tori’s sex into ovulation!

Even as he continued to lick, Josh could faintly tell that his tongue was growing longer. Its flattened surface was capable of reaching further into her vaginal walls, teasing the insides of her sex and making her moan. The words were unintelligible as Tori was opened up in a way that no penis or sex toy had ever done. The only thing better would be to take his leopard prick inside her, and with it, his potent seed!

The effects of their session were not lost on Tori either as a tingling assaulted her fingers. She moaned, digging them into the floor as the inside of each digit began aching. It was as though something was forming from the bone within, stretching against the joints and tissue. It seemed to press outward, pushing at her nails and tearing slightly at the skin. 

A crack sounded from the joints as they popped apart, making room for the growths straining to free themselves from her fingers. Such a process should have been immensely painful. Any semblance of irritation was removed by the knowledge that she was to be the leopardess of her fantasies. 

A low growl escaped her lips as the points within her fingers pushed insistently against her dead, human nails. The process of change allowed the connections of blood and tissue to separate from the nail bed without damage. The loosened keratin popped off with little fanfare, dropping to the floor and collecting with the rest of the loose hairs that had fallen from her head. 

Soon, the tips of translucent, feline claws were poking from the bare flesh, extending outward as though being birthed. Tori was hardly aware of the presence of the sharp crescents as they curved outward. A slight tingling was all she was able to register as bits of skin flowed over the base of her claws, shorts sheaths that could contain them when not in use. Even during their formation, she could detect new muscles allowing them a modicum of movement. 

Stiffness in the digits nearly prevented her from digging her new claws into the floor. The bones within continued to snap apart, diminishing in mass as they were pulled within her widening palm. The joints and tendons required to move them were soon absent, leaving only those capable of flexing her claws in and out. Soon, the fingers were less than half their former size and still shrinking. Her thumb was even worse off, moving slowly up her wrists as her human hands continued to warp.  

Josh, meanwhile, was hardly aware that his tongue hung awkwardly out of his mouth, unable to fully retract into his face had he not been using it. The more it grew, the better he was able to groom his lover’s insides. Even more preferable was how much fluid he was able to lap down with his tongue’s added width. Fluids laced with hormones, their flavor sent Josh into a state of arousal his human self could have never known. 

A slight crack resonated up through his jaw as it began to push out. Josh knew instinctively he should be scared, retaining more awareness through the effects of the magic than Tori. But, the thick cream of her cunt lips served to make him inebriated on the potent feline pheromones and musky flavor. He could only focus on how well the growth of his face allowed him to dig himself further into her groin.

The edges of his mouth continued to force themselves outward, widening slightly as his snout formed. His nose was taken for the ride, being shoved further inside Tori’s vagina and stained with the musk of the leopardess. Yet, beyond a slight ache in his jaw, Josh barely registered the changes as he continued to sexually please his mate. 

Tori was close to orgasm now, Josh’s skilled feline tongue giving her the experience of a lifetime. Her hands were altered beyond recognition as human, but Tori didn’t care. The prospect of cumming with her mate more than made up for any loss to her humanity!

Thick patches of flesh started to puff from her palms, darkening to black as they spread out between the rough patches of fur. Their feline configuration seemed familiar as Tori braced herself against the floor, raising her hips to draw her mate’s muzzle in further. Her paw pads lifted her up, allowing her mate to better tongue her sex as she came closer and closer to release.

Josh’s hand was on his leopard prick, stroking in tandem with his licks as he continued to service his female. Though he longed to penetrate her slick opening, the flavor of her sex was too enticing to give up. The potent hormones swirling through the air only served to make him wish to know his mate’s hindquarters further. 

The taste itself was sufficient to spur his arousal as he stroked himself to completion. It would not take much longer to bring himself as he brought Tori. His thick balls throbbed as they prepared to spill their load once more. 

Though a semblance of terror remained in his psyche, Josh couldn’t deny how wonderful the taste of leopardess sex was on his tongue. It spoke of her virility and need to bear his cubs. Josh never pondered having kids before, but now he couldn’t eliminate the intrusive thoughts!

“Mfff… MMRRRFFFF!” Josh moaned into his mate’s vagina as his balls shook and his throbbing cock blew a load onto his hand and the floor. 

The force of his orgasm shoved his muzzle as deep as it could into Tori’s cavern, sending her into orgasm to join him. A splash of fluid greeted his nose, and Josh drank it down greedily, the hormone-laced flavor sending more ropes of his leopard cum onto the floor. 

Tori’s entire body twitched as her vaginal lips clamped down on her lover’s muzzle, holding his tongue in place to focus on her stimulation. The waves of feline orgasm left her feeling complete in a way that no human experience could compare. Orgasmic ecstasy was compounded by the realization that she was about to complete a primal need to procreate! 

In the throes of post-orgasmic reverie, the alterations to Tori’s hands reached their climax. Her thumbs were pulled up her wrists, nearly hidden by leopard fur. She could not move the joints at all but did not desire to as they sat in their new position. They were effectively vestigial, no longer opposable thumbs. 

The new joints in her fingers pulled her claws all the way inside the digits as a show of her state of relaxation. The paws themselves continued to swell, far larger than a teenager’s palms, as they reached proper feline proportions. A strange, hardened protrusion stuck from above her former wrists, sinking into the skin. It would provide her better grip should she ever find herself in the frozen lands her leopard body was adapted for. 

In her post-orgasmic reverie, any thoughts of escape were held at bay. Tori still knew who she was, had memories of her human life. But they just seemed so… far away. It was like another life, one from a dream that she had awoken from. This waking state held so much more promise in its simplicity. It was easy to allow herself to fall into the instincts that desired to further the changes to completion. 

Josh fell back, the sweet nectar of his mate in his mouth as he basked in the tremors of release. His spunk clung insistently to his hand, and without thinking, Josh lifted it to his lips. Sniffing only for a moment, his tongue reached out to clean his cum in feline fashion. Such a mess did not belong on his pristine form!

It was that taste that made Josh realize what he was doing. Spitting, he tried to get the flavor of his own seed out of his mouth. He was attempting to groom himself just like a cat would! Worse, the rank taste stood out even through the feline juices he’d lapped from Tori. His own spunk was rank!

It was then he looked up to see what had become of his lover. Tori’s body was trembling, shaking from the pleasure of being serviced in such a bestial way. She seemed calm, relaxed, as though bathing in leopard urine and fucking themselves into cats was the most normal thing in the world. 

“RRRooRRRRI!” Josh growled, startled by the words escaping from him. They sounded more akin to a cat’s growls than his human speech!

The feline muzzle he now possessed was clear in his vision. It stuck out in front of his face, an alien protuberance that did not belong to his features. No matter how he shook his head, he couldn’t get it out of his face. He now carried the visage of a cat!

Josh hardly had the wherewithal to contemplate the changes further when Tori’s sex came into his view once more. Lifting her tail, her stained hindquarters seemed to rotate back towards his nose, wafting her scent to entice him forward. She seemed to move her body with inhuman flexibility, her winking sex beckoning him to mate her like the leopards the two were becoming. 

Even through the musk-fueled haze, Josh was aware of the changes that had assaulted Tori. Where her hands once awkwardly held up her form were a perfect pair of leopard paws, claws outstretched to hold her in proper posture. Unlike Josh’s own reaction, Tori seemed oblivious to the fact that she no longer had any way to interact with the human world. She was losing so much of herself! 

“RRROORRII… RRROOOPPP! RRREEESSSE!” Josh tried to cry out, his words garbled with the unfamiliar muzzle. He was panicked to hear leopard inflections coming from his mouth. Still, Josh knew he needed to get through to her. He had to try and save them both!

Her mate’s words shook something in Tori’s mind, some desire to listen. She clawed herself forward reflexively in response to the panic in her lover’s voice. The images from her dream of humanity became more prominent in her mind. There was even some desire to return to that life, despite how pleasant this experience was. 

Along with that notion came a severe panic that Tori could not shake. It felt amazing to change, but…she had allowed it? Crawling over to the furthest stall, she continued shaking her head, struggling with the intrusive thoughts. It was a powerful conflict in her feelings. The desire to go back and submit herself to her mate was nearly impossible to ignore. Why was she fighting against such obvious needs? Why was her mate hesitating?

Vague images floated through her mind. They spoke of being bipedal, wearing clothes, eating various foods. Sex with her boyfriend in a bedroom. Sleeping in a bed, attending classes with other humans. Memories of her human life. 

Yet, the more she viewed the images, the more distasteful they seemed to be. The sight of her humanity from those memories seemed wrong, somehow. Where was her wonderful tail and paws? Her soft, lovely fur? Where was her male leopard mate? The mental images of cats seemed far more beautiful than anything human her mind could concoct. 

Worst of all, the image she had of herself did not meet the hybrid form she now wore. She had her fur and her paws and her tail. But she lacked the muzzle, the hind legs, and the liquid-like grace a leopard’s musculature could provide her. She was not complete!

Eager for confirmation, she raised her nose to the air, sniffing audibly as slits formed at the sides. The scents of urine, heat, and musk sent another wave of lust through her loins. They reminded her all too well of the pleasures of leopard flesh she had indulged in not moments ago. A tingling in her nose and face reminded her that partaking in her mate’s penis would give her the feline form she currently craved. 

Josh, meanwhile, found himself crawling towards the exit. The ache in his loins made it impossible to stand without rushing at Tori to take her. It was all he could do to halt his transformation. Even his words were gone, garbled by his protruding muzzle. 

The needs in his cock were maddening, and it was a Herculean task to even crawl away from a potential mate. But still, he had to try. Josh had been attempting to breathe through his mouth. His nose was far more sensitive to the potent female pheromones perforating through the air. 

His feline prick remained at full attention, threatening to rub at the fur of his crotch and send him into orgasm. He had no idea that cats had such stamina. He felt he still had several loads left in him before he was finally spent. Judging by the scents still wafting from Tori’s cunt, she would be happy to take all of them!

Even the mere arousal from his stiff prick was enough to spur the change further. An intense itch ran from Josh’s back as his tail continued to thrash impatiently behind him. It was still growing, just shy of the thirty-five inches that comprised a male Amur leopard’s tail. Fur was spreading from his groin now, his own sparse human hairs on his chest falling away to make room for his new soft coat.

Josh was almost to the door now. He simply had to reach up and push it open. Then, if Josh crawled out into the evening air, the leopard musk might clear from his nostrils, and he would be human enough to walk away. He didn’t want to leave Tori to change, but he couldn’t do anything to help either of them if he joined her as a leopard! He had to get out and transform back, get help for his girlfriend before avoiding this godforsaken zoo forever. 

Eagerly, Josh pushed open the door, expecting the zoo lights to greet him. Instead, the sight of a human looking through the open door made him gasp. He backed up, embarrassed at the erection he was sporting before realizing that it was the zookeeper from earlier.

“So sorry! Was just doing a quick check. I’ll give you two some privacy!” the man said as he allowed the door to swing back before he walked off. 

The door closed with a sight breeze, and another thick waft of leopardess musk hit his nose. Josh’s gaze turned to see Tori steadily back towards him. Her hips were raised, her sex on full display, nearly winking from its need. Her tail was lifted up and to the side, trembling with eagerness. 

Josh wanted desperately to look away, to focus on anything other than the willing female before him. Yet, he found himself focused fully on the offering being given. The scent was so pungent in his nose, the taste of her sex so fresh on his lips. Nothing had given him such pleasure before. 

As though in a trance, he rose slowly, crawling on hands and feet towards the presenting leopardess. Tori had changed so much already, looking more cat than human at this point. The changes were starting to sweep over her feet as well. How many mating sessions would it take to complete her transformation now?

He raised himself up to her back with trepidation, grasping her furry sides with one hand as he reached down to hold his penis in the other. It wasn’t lost to Josh that if he allowed his hand to guide his penis into those folds, he might lose them as Tori had. The thought should have terrified him. How could he get out of here human without his hands and feet? 

Yet, her twerking cunt lips enraptured all his attention. Josh was no stranger to sex, particularly in the past few months when he’d been dating Tori. He had loved the anticipation of vaginal penetration, almost as much as the act itself. Yet, nothing he had ever experienced with her could compare with the excitement of mating now. His penis ached with the need to be surrounded by folds being so easily offered. It was a primal need beyond any sex or lust. He needed to claim the female as his own, more than he needed air or water. 

With little fanfare, Josh shoved his dick inside, a feline moan escaping from his lips as he did so. The feeling of his penis inside his lover’s folds was sublime. Tori’s tight lips sucked him in like a vacuum, her walls stretching around his penile spines. It was like each thrust sent shockwaves through her insides, the tremors sending corresponding ripples into his own prick to his weighty leopard balls. 

Even her growls of pain or pleasure were insufficient a deterrent to prevent him from picking up his pace. Though the spines inside her cunt lips were sharp, it was a good pain, like hot peppers teasing her insides. Tori’s vaginal walls rocked with each thrust, being teased to ovulate so that one of her eggs might take the life-giving sperm inside them. Her growls were of mixed agony and ecstasy as her end neared. It was far more exciting with the knowledge that the act might make her with cubs!

A tingling in her nose filled Tori with excitement as her hips made counter thrusts with her mate’s. The bones in her nose started to stretch with a slight crack, though there was no pain or discomfort from the process. The changes in her skull fueled the growth of nasal cavities that better drank in her mate’s arousal, and in turn, her own. Her Jacobson’s organ had formed as well, better drawing the musky male scents to their proper receptors. Every adaptation increased her desire to mate, and with it, the changes to her form would allow her leopard pregnancy. 

Tori felt the nails expending on her hind feet, soon-to-be paws. They dug into the ground, growing into crescents to match the ones on her front paws as they sought to keep her in place. They, too, popped off the former nails as they joined the ten sat on the floor amidst fallen human hair.

Several wet pops rose from her toes as the bones within diminished and the joints repurposed to house her new claws. The backs of her feet were already covered in luscious leopard fur, and their bases grew calloused with the formation of thick pads of skin. Only four toes remained, a new callus forming just below the heel to help stabilize her on the floor as she thrust her hips into her mate’s.

Meanwhile, every inch of his skin became bare from its human hair, though Josh hardly noticed. Save for his head and his groin, his former humanity barely contained any hair worth remarking about. Even his sparse semblance of a beard was hardly missed as a light peppering of leopard fur poked from the vacant follicles. A sharp twinge of wiry hairs erupted from around his nose, vibrating slightly as they formed several dozen feline whiskers. 

Itching from the base of his tail did little to slow his thrusts as Josh found his pace. His hips found the motions difficult from the position he was fucking his lover. He was encouraged to plant his seed as deep in his lover’s loins as possible. Feeling her soft fur against his own, he delighted as more sprang forth from his own pores. 

Longer guard hairs lanced forth, preceded by a soft undercoat of lighter leopard pelt. Larger rosettes than even those Tori sported sprang from the orange fur, opening like blooming flowers. The fur ran up his chest and over his shoulders, erasing any trace of human skin. Finer hair coated his arms and down across his hands. His thighs and calves and feet were coated with similar softer fur. Leopard pelt even poked between his toes, as was common in colder weather cats. 

Josh was only slightly distracted by the sight of his shorter, brown human hair falling down across his face, tickling his long nose and snout. Yet, it was not nearly sufficient to draw him out of his leopardess’s vagina. Part of him did not even miss his human hair, especially not since his scalp was slowly being coated with leopard pelt. 

A peculiar ache erupted from the sides of his head as the muscles in his ears started to spasm. Their backs coated in leopard pelt, their contours melded like putty, stretched out into rounded shapes that rose above his scalp. Longer fur poked from the inside of the widening cavern, twitching to take in the slightest vibrations in the air. Yet, the only ones of concern were the huffs and growls of the developing leopardess underneath him. 

Tori’s own ears were altering to match, their surfaces expanding the height of her scalp as new muscle connections started to twitch them instinctively. Their newly formed hairs, however, only focused on the vibrations of her stretching muzzle. Her whiskers trembled slightly from the ache, though none of the sensations were sufficient to draw her attention for too long. 

In truth, nothing else mattered than the cock spearing her womb, throbbing faster now that her mate’s end was coming. That simple knowledge, in tandem with the direct stimulation to her sexual organs, was enough to bring her to blessed release. With a “RrrrOOOOWWWW!” Tori came, vagina vibrating as her fluids mingled with her boyfriend’s own. 

The feline cry almost broke Josh from his lust-fueled trance, especially with how loud it became to his new ears. But, the vaginal walls gripping his cat’s prick had already sent his balls into overload. With a corresponding yowl of his own, Josh came, hips thrusting faster than humanly possible as spurt after spurt of leopard cream filled his lover’s vacant womb. Nothing he had felt so far today was anything close to the sensation of cumming with a warm glove on his feline phallus. 

Spent, Josh didn’t even bother to dismount his lover, simply lying into the soft fur along her back. She was very warm, and Josh’s eyes fluttered shut, all fear of losing his humanity fading from his mind as he drifted into a peaceful slumber. 

Tori, too, fell into a deep sleep, her body sore and her womb full for the time being. She did dream that night, images that felt relaxing to her changed psyche. They were dreams of resting, of hunting, and of stalking prey. Though the heat in her loins had not fully abated, the warm cum in her womb kept her satisfied enough to prevent the dreams from throwing her into lust once more. 

Josh, too, had leopard-like dreams. He saw himself as a majestic beast in northern woods, knowing he was the dominant being in his domain. Josh was content with knowing his seed had been successfully deposited. Though he would mate many times more with the female, he did not need to do so at this moment. 

That lack of stimulation in their rest allowed the magic to temporarily wane and provide a promised reversion. As the two cats slept soundlessly, their bodies itched in tandem as the follicles holding their lovely fur let go of their burden. Such intense prickling of millions of hairs falling to the floor should have woken each cat several times over. But lost in their exhaustion, nether noticed how their former leopard’s pelt now provided the two of them with soft bedding.

******

The sound of the door opening and a man’s shocked voice roused Josh from sleep. It took him a few moments to get his bearings, as though he hadn’t gotten nearly enough rest. After a moment’s recollection, he realized its source. The sound was familiar, the zookeeper’s from yesterday. 

The damn sunlight hitting his eyes made Josh shake his head. The memories of what happened last night hit him full force. What had he done!?

An intense itching against his skin made him look down at the blanket of leopard hairs that coated the floor. His skin was bare, though still carried with it the coloration and markings of leopard pelt. Still, it was better than nothing. He was starting to change back!

Ignoring the man, Josh’s gaze turned down towards Tori, who was still asleep and oblivious to the zookeeper’s presence. Her features were much more leopard than his own, but she, too, was without hair. Both of their pelts must have fallen off in the middle of the night. There really was a chance that they could change back if they resisted!

“Thank God! I’m glad I’m not too late!” The man’s voice shouted, bringing Josh’s attention back. Josh wanted to speak, but only a hearty growl escaped his voice. Josh backed up in shame, forgetting how much he had still lost.

“Look, I’m going to go ahead and assume that since you didn’t change all the way, you don’t want to be leopards. It’s…I guess the instincts are harder to fight than what I thought they’d be.”

“Sorry, I’m rambling. I talked to my boss this morning. Apparently, she can perform a spell to change you back! So long as you have a little bit of humanity left, it should work! She should be here in about half an hour!” The zookeeper informed them as he ran out the door.

Josh growled his excitement before realizing that Tori was still asleep. Lowering his voice, Josh turned to head for the door. If he could leave without waking her up, then he wouldn’t be tempted to mate with her. And then, she couldn’t touch herself into a leopard, either! She didn’t have hands anymore, and Josh doubted she could do much with her paws. Still, it was best not to tempt her. 

The musk and urine smell hanging in the room had hardly abated over their rest period. Josh could feel his cock sliding from his sheath at the scent of sweet leopardess perfume. He still held hope that if he got outside into the fresh air, the urges in his penis would abate. Josh only had to wait half an hour before he would be changed back. Surely, he could last that long!

The sounds of low purs drew his attention, foolishly, to Tori. She was wide awake, lowering her arms to her crotch and trying frantically to rub at it with paws insufficient for the task. She was crying all the while, a pitiful sound that spoke volumes of her need. Having been asleep and more of a feline in mind, she was unaware that resisting would change her back. Worse, perhaps, in her current state, she might not want to!

Tori tried a few more moments to rub her sex. But, with its new position near her anus, she couldn’t reach it with mostly human physiology. And her massive paws did nothing to please her genitalia, leaving her whining and writhing for more!

At the sight and scent of her mate, Tori let out another feline yowl of desperation. Turning herself around, her tail raised and her leaking sex throbbing with its need. Her tail twerked, wafting her pheromones towards her mate. Her heat was still strong, and the desire to complete herself was all-consuming. 

Even the part of Tori’s recollection that was still human found the situation distasteful. Her beautiful coat of fur was on the ground. She desperately wanted it back, to be covered in her lovely pelt once more. Both parts of her mind seemed to agree that she wanted to be fucked. The leopard needed to alleviate her heat, and the human wanted to immerse herself in the most amazing sex she’d ever had!

Josh gazed at the offering before him, stuck on the precipice of giving in. He needed to fuck, to quell her heat. But he wanted to be human again, didn’t he? The conflict was almost maddening!

The more he stared, the more the man’s words came to him. Josh had half an hour before he could be changed back. And it would take several more fucks to change him fully. Surely, a single fuck wouldn’t condemn either of them. The more he considered it, the more he felt his resistance waning. Why not give in to the most amazing sex he’d ever had if there was no risk?

Josh found himself moving towards the leopardess before he had made his final decision. By the time he had decided to give in, the leopardess’s cunt lips were in front of his face. Lapping for a few moments to get a taste, he reached up on her back, spearing for her hole before sinking in. 

Inserting himself awkwardly, Josh felt his member being engulfed once more by the wonderful folds of his lover’s cunt lips. Warm waves of pleasure flowed up from his cock, making him elicit an approximation of a feline purr from his lips. The sound reverberated through his chest, making him relaxed as he settled into his rhythm. 

Though the position was a little awkward, Josh could feel his penis reorient slightly, making him have to adjust his stance. Yet, once the tingling from his groin subsided, he found the mating more comfortable than ever before. 

The now-familiar itching started playing over his groin as hundreds of leopard hairs poured out of the skin like a blanket. This time it seemed to come much faster, as though his body was remembering the hair it had once had. Soon, the fur had spread back down his legs, filling in his feet and toes once more. It continued up to his back, covering his bald scalp and coating his face and cheeks. His arms, his shoulders, and his belly were soon covered with his yellow, rosette spotted leopard’s coat. 

To Josh, it was worth it. It would likely be the only change this fuck would inflict upon him, and he would not last long with how eager his mate was to take him. It was his one chance to experience such bestial sex, all while guilt-free. He knew Tori wanted it as well but worried how much it might change her. Assuming she didn’t cum again directly after, he figured it would be fine. This change would likely only grow her fur as well!

Feeling her mate’s erection inside her, Tori stretched, a few cracks from her chest and arms sounding as she did so. It seemed as though her chest was tighter than before, but Tori’s swift motions didn’t give Josh much time to look. Any notions to investigate further were erased when Tori shoved her backside into his cock once more.

Tori was only angered slightly by the lack of beautiful fur coating her body. Why was it all around her on the floor? Was she sick, perhaps? Yet, she never felt more powerful, vibrant, and horny in all her life. Instinctively, she knew that mating would regrow the fur, changing her from woman to leopardess so she could birth the cubs her psyche had been craving.

Torn could feel her ribs expand with a crack as they pushed against her chest. It was only a slight discomfort to her as she allowed herself to give in to the mating. The bones continued to expand, forcing the flesh away as even her spine started to extend. She could feel her belly tightening as her spine added more links, allowing her a longer, more flexible posture. 

Her nipples tingled slightly before Tori could feel the pert fat of her breast tissue starting to deflate into her chest. Part of her worried about their loss, but the sensitivity of her remaining teats alleviated those fears. Tori’s shifting chest seemed to bring them lower on her body, closer to where they needed to be to nurse her cubs. To her delight, two more prickling sensations erupted below her belly, the second set of teats.

Her skeletal structure continued to alter as she was fucked. Each thrust formed her bones into more of a feline configuration. Her barreling chest forced her shoulders to rotate forward, the scapulas flattening into her flanks. Stretching her arms out in front of her, she became aware she couldn’t move them side to side. Yet, she no longer required such flexibility in her feline form. The new motility her body would gain was more than sufficient to compensate. A flap of skin formed between her chest and elbow, completing the changes to her front legs. 

Similarly, her hips started to rotate parallel to her skin, the bones of her pelvis separating painlessly before pushing forward and reforming. Shrinking thighs flowed into her stomach as her knees were pulled towards it, connected by that same flap of skin as her front limbs. Stretching heels and diminishing calves solidified her quadrupedal stance as she shifted to allow her mate to further enter her folds. 

Josh remained largely oblivious to the wet cracks ringing in his ears, with only enough focus to look for growing fur. Had he not been amid rut, he could have noticed that it was more difficult to maintain his place in his mate. He simply kept shifting, the sensations annoying but not enough to lower his prick or decrease his insistence. 

What little awareness he maintained assumed that both had gotten lucky. No changes were happening during this rut. The sensation of growing fur was lost to him as well, even as he felt himself growing closer and closer to orgasm. A series of aches plagued him, but the waves of pleasure canceled out any of the discomforts. 

A crack in his back was only a slight distraction before he realized that his mating position was more comfortable again. The idea that his penis was in place in his mate’s cunt filled him with more pleasure and anticipation than he was even prepared for.

His tiny prick gained proper purchase, sucked into Tori’s muscled cunt lips. She once again wanted nothing more than to take her mate deep as he prepared to fill her with leopard cream. Josh’s hips shifted, pelvis rotating forward and forcing his cock to the hilt.

By the time the cracks intensified to a point to cause him concern, Josh was far too invested in the breeding. He could not worry that his thighs were shortened, his heels shifted longer to compensate for the stance. His knees had moved to align with his belly, which itself had stretched in tandem with his spine. His chest was starting to barrel, ribs pressing against the skin before it grew to compensate. 

Crawling up along her back, Josh allowed his newfound flexibility to find a more comfortable place on her backside. Gripping her newly grown flanks, Josh found his hips clicking in a feline configuration as he picked up his pace. He ignored the creak of his spine, the shifting on his shoulders, and the collapse of his upper arms. Only the tingling from his nipples as another set adorned his belly distracted him, but it was insufficient to deter his advances. He was so close!

Tori, meanwhile, felt the alterations come to a climax, along with her sex. Finally, an exquisite itching erupted from her groin as her lovely fur regrew. It spread like time-lapse grass, running over the insides of her legs and up her longer stomach. It continued to spread, leaving her nipples bare as it ran up to cover her scalp. The tingling intensified as every inch of her skin started to resume the growth of its lovely pelt. The realization of her leopardess glory returning was nearly enough to make her cum on its own!

By the time that Josh realized his own fur coat was coming in, it was too late. He was already so close to the precipice of orgasm that he couldn’t hold back, even if he had a semblance of his human self-control left. Crying out, he shot his bolt into his lover’s sex, feeling her walls massage his member and milking it for all it was worth. 

Tori yowled, feeling that exquisite warmth of leopard semen floating in her womb, giving her another chance at birthing new life. It made her feel full and content in a way that no human experience could possibly compare with. Leopard mating solidified the notion in her mind that she wanted this. Nothing in her human life was worth keeping for the simple pleasures that feline existence could bring. She would happily allow the last few changes to complete her lovely form!

Her mate’s leopard prick suddenly pulled out, Josh’s penile spines rubbing her the wrong way. Without thinking, she yowled, reaching back her paw to swat at him. Any connections between her sexual experience and the pain were lost in feline frustration. How dare the insolent male hurt her in such a way!

Josh pulled back, startled as he narrowly dodged Tori’s paw. Though her claws were mostly retracted, had he been hit, it could have hurt! Josh was shocked at her reaction until his gaze met his lover’s. Her eyes and head were still human-shaped, but the expressions on her face were all leopard in their ferocity!

Josh felt a flush of fear flow over him at the realization. Was there anything of her mind left in there? Was she doomed to lose her humanity to a cat’s instincts and drives forever if they failed to hold out for the spell to revert them? Or were the new instincts assaulting her simply too powerful to resist against?

Josh understood how trying it was to hold out against the animalistic urges. He, too, felt the leopard in his mind, its needs lying just below the surface. He couldn’t help but think the moment his guard was down, the leopard he was becoming would break through and force him to mate himself into the body it needed. 

The intense itching over his body sent shivers of fear through his frame. The fur was steadily spreading up his belly, stopping only to run over his back and coat his tail. His head and scalp were itching with more fur growth now, as his former leopard glory rushed to replace itself. 

Josh’s panic reached a crescendo when he realized that Tori’s coat had grown back fully. He’d been a fool. Judging from her body, her torso and back legs had fully changed into that of a cat. She had undergone so much alteration from that fuck alone! 

Josh felt a bit of rage building in his mind, enough to drown out the lusty leopard that also sat in his psyche. He had willingly turned his girlfriend into a cat, and possibly himself as well. He berated himself, no longer thinking the one fuck was worth it. 

The decision was obvious. Josh had to get out of there, come hell or high water. Any extra moment he stayed could force his hands into paws, or his face to stretch into a muzzle. He would be a cat forever, living in a zoo and watching his mate grow pregnant, while people came and gawked at them every day. As good as the sex and mating felt, he didn’t want to be like this forever. He was human! He had goals and ambitions that sat well beyond the confines of this zoo!

Josh tried to stand but realized that his hips didn’t seem to allow him to. He was able to rise slightly onto his haunches but quickly fell as he tried to walk. Looking back, Josh’s eyes confirmed his worst fears. He was just as much a cat in body and torso as Tori was. He was now designed to walk on all fours, stalking just as a leopard would!

The fear of the changes overrode any anger he had as he struggled desperately to keep the leopard instincts at bay. He didn’t want this! He wanted his human skin and legs back! He wanted to go home, sleep in his bed, go to school, graduate, and have a future for himself. It was the human world he belonged to, not the zoo as an animal on display!

An intense irritation from his crotch broke him from his reverie. Staring down, Josh was drawn to the areas where his leopard cum had coated his crotch. There were several globs of semen from his release, thickly clinging to him. The stench was rank, even to his changed senses. 

Josh recalled that scent and taste as he’d cleaned the cum off his bare skin. Soon, the memory of how good it felt to be clean flooded his senses. Part of him was aware it was his leopard desires rising to the surface. But, it was hard to hold them at bay with the recollection so fresh in his mind. The notion of being cleaned and groomed, to keep one’s coat pristine was almost a stronger drive than the one to mate!

The sounds of a tongue lapping broke him from the conflict enough to see that Tori was busy completing the very action he longed to perform. Using her new feline flexibility, her leg was in the air, her torso bent to allow her tongue to reach all the way to her backward-facing vagina. She took long, careful strokes, teasing the outside of her fur to clear it of both her feminine juices and his cum still leaking from her sex. 

Tori was too enraptured in her instincts to realize what she was doing. The taste of their combined musky fluids was like fresh water, and she drank it down eagerly. Both the flavor and sense of cleanliness that it gave her were phenomenal. She was lost in the fragrance, her mind all cat as she groomed herself, savoring the sensation to her sex. It was like a brief interlude before they mated again in earnest!

As she licked, her teeth suddenly started to loosen, popping bloodlessly from their sockets. She stopped only long enough to spit them from her muzzle before she gagged on them. Her tongue had a difficult time with the action, but she thankfully did not swallow any as they fell to the floor to collect with the hair and nails she had already lost. 

Yet, the loss of her dentures did not hinder her grooming as she went right back to licking her sex clean. Soon, her backside was glistening, every hair in place and ready for another round. Her coat was complete once more, and she wanted to groom it thoroughly. Once the needs in her loins had been met, she would have plenty of time to reach the perfection that sat well to her feline proclivities. 

Seeing Tori clean her crotch drew Josh’s tongue down towards his own. For a few moments, Josh’s mind played back and forth with the possibilities. He could clean himself, risk further change. Or, he could continue to suffer from the madding need to groom like the leopard he was. Maybe, if he was quick, he wouldn’t change too much…

The momentary hesitation was all it took for his tongue to be on his sex. Lapping furiously, the familiar taste of his cum was covered by the fragrant flavor of his lover’s cream. Any harshness from his ejaculate was quickly erased, and he began lapping with gusto. The satisfaction was instant; his sticky seed was rapidly replaced by his drying saliva, reversing the irritation plaguing him. 

Only when his teeth started to loosen did Josh realize he had gone too far. But by then, it was too late. Coughing and sputtering, he could feel his canines, his incisors, and even his molars start to fall out one by one. Pulling back, he lowered his mouth, using his tongue to remove the lumps of bone from their sockets before spitting them on the floor one by one. It was powerfully unnerving, akin to every nightmare he’d ever had of losing his teeth in fiction. 

His teeth were soon gone, leaving his gums bare. But something in his mind told him to relax, that those human teeth were not his anyway. It was hard to maintain the panic with the knowledge that he would have lovely fangs, sheering molars, and extra incisors for grooming. He would not remain toothless for long, his leopard mind reasoned.

The familiar odor of leopard musk that had enraptured him so hit him once more. Looking up, Tori had finished grooming and had risen up to expose her puffy cunt lips once more. Josh knew he needed to resist. He truly did. But, with the flavor of her sex on his tongue, his leopard mind was remiss not to have more, especially since it was so readily offered.

Tori was all leopardess in her thoughts now as she presented herself to her lover. The desire to complete her form was all-consuming. It would take only one more fuck, her human mind reasoned. Both parts of her body longed to be complete, to be the cat she could be. Nothing else mattered. Not her human life, her friends and family, or Josh’s humanity. She would have him with her after this, the handsome male that completed her leopardess fantasy. 

Josh sized up the situation as best he could, telling himself he was determining if mating her would be OK. As far as he could tell, the only things remaining of her humanity were her eyes and skull. Otherwise, she was a perfect leopardess specimen, looking like a well kept and groomed zoo cat. There was no way he could fuck her without dooming her to this body forever. 

Yet, the choice was soon taken out of his hands when Tori started rubbing up against him, exposing him to the subtle scent glands on her chin and face. The texture of his whiskers on her flesh made him shiver, providing a tactile experience beyond anything he had recalled thus far. Such a lovely creature was giving him all the attention he could ever ask for. And Josh’s leopard mind relished it!

At that moment, Josh the human sank below the surface, any fragments of resistance rubbed away as the leopardess rubbed against his skin. In a trance, Josh found himself grinding back against her, sniffing her body as he sought for her to present her sex. The sensation of feline flesh against his own was exquisite, eliciting a rumbling from his chest akin to a series of purrs. 

Eventually, Tori pulled away, leaning forward and raising her tail to present her need. Josh wasted no time, all feline in his mindset as he licked lovingly at her sex, making her growl and thrust her hips back into his muzzle. The taste was maddening, pumping blood into his feline phallus for the rut to come. 

Pulling his muzzle away, Josh reached up with his hands and grasped at Tori’s flanks as he moved into place. His fingers pulled at her hair a little too roughly, elicited a growl from her lips before he found a comfortable position. 

Cock lined up, he shoved it into Tori’s eager folds, a corresponding growl from both of them signaling their pleasure. Even though lost in leopard lust, Josh was still aware that his new anatomy aligned him at the perfect angle to mate with his lover. He found himself all the way to the hilt and began thrusting with no further fanfare. 

Lost in the throes of feline sex, Josh hardly noticed that his hands felt stiff, his grip waning as though his fingers were shrinking. A few sharp cracks echoed from his fingers, and the joints started diminishing as the bones shrank into his waning hands. His palms themselves were widening, their surface spreading over Tori’s flanks and gripping them tightly with the coarse pads forming on the bottom. 

Too late, the human Josh realized what was happening. The sensation of his fingers shrinking, his grip slipping awoke some primal instinct in his mind for self-preservation. The thing he’d feared the most was happening. He was losing his hands, his human way to interact with the world!

Yet his body was too far gone into the mating act to pull out now. Each time his panicked mind tried, his lover’s inner walls raked his spines in just the right way to prevent him from escaping. Every time he pulled out, Tori’s cunt lips sucked him back in, the motions accentuating both of their pleasures. 

The cramping sensation of his fingers diminishing was almost pleasant as they reduced themselves to stubs. His widening hands stretched across Tori’s back, the coarse pads underneath swelling and rubbing her skin in sensual ways. His hands were massive now, easily twice their former size as the fur thickened between the shrinking digits. His thumbs cracked as his stretched wrists drew them up along his arm, situated in their new configuration. 

A bizarre sensation erupted from inside each finger, a sharp pain that pressed against his nail bed. With a “yowl!”, Josh could feel his new leopard claws pushing up the nail, several pops echoing as they fell onto Tori’s back. Her twitching skin was able to remove the irritations, knocking them to the floor. Josh was thankful that the process was painless, not even enough to make his fingers bleed. His new claws dug into Tori’s skin and made her growl slightly in tandem with the barbs on his feline phallus. They had stretched into crescents, partially hidden by new sheaths that had developed. 

The same cramping assaulted his feet, his big toes the first thing to go. Along with his stretching heels, they were pulled upward and sucked into the remains of his metatarsals, no trace remaining on his physiology. This time, the pain of developing nails proceeded his shrinking toes. Their sharpened, hard tips popped off his human nails with little effort as they slid off onto the floor. He could feel them under his feet as he readjusted his stance to compensate for his stretching heels.

His toes were next to follow, pulled towards his widening feet. A small part at the back of his mind thought it fit to flex them one last time, though they no longer retained that ability. The reduced stubs sat just ahead of his coarse, swelling paw pads, allowing his claws to dig into the floor. He could scarcely feel his sixth pad forming as his heel was raised in his mating position. 

By now, four feline paws had completely replaced his hands and feet. But Josh didn’t care. The sensations of rut were far too divine for him to lament the loss of human interactions. So much of his body was lost already to the cat. Only his head and his eyes retained some modicum of his humanity. But at the moment, Josh didn’t care. Nothing was better than the promise of present pleasure!

One thing did concern him even as he felt his orgasm built towards its inevitable end. The contours of his girlfriend’s head were shifting before his eyes. Her scalp was sloping, flowing into her muzzle as the rounded shape gave way to a more compact feline skull. Fearsome, yellowed burst forth from empty sockets, giving her the needed utensils for feeding, killing, and grooming. Shifting parietal and frontal bones forced her brain to compress into a leopardess shape, eliminating all fringes of resistance that might have existed. Yet, Tori had long since abandoned any fear or hesitation. She truly embraced her new life as a leopard!

The last thing to go was her eyes. Her rounded eyeballs expanded towards an almond shape that took up almost one-third of her head. The pupils rounded into black circles, while the irises turned amber, reflecting the cat she had become. They were the eyes of a predator, intelligent, watchful, and soulful. Any semblance of her human regret was long since removed as she sank into the peaceful instincts of a mated leopardess.

The sight sent a shiver of fear through Josh’s thoughts. He was fucking his lover into a cat, likely forever. And he had no power to pull out as his slapping balls tensed, and he shot another blast of leopard spunk into her willing womb. His yowls were echoed by the leopardess under him as her pulsating vaginal walls held him tight and sent waves of release through her entire body. 

Spent, Josh backed off, being swatted at by Tori’s outstretched paw as his spines raked her insides. His thoughts were hazy, but the human part of his mind was still aware he was now in the presence of a real animal. Was there anything of his former girlfriend left? 

Josh realized at that moment that there was hardly anything left of himself. He only had the contours of his human scalp and his blue human eyes remaining. One more fuck would doom him to the same fate as Tori. How much time did he have before help arrived?

A knock on the door gave him his answer. “Hold out guys! The boss is just packing her car. Should be, five minutes, tops!” said the zookeeper, before Josh’s new ears heard him walking away. 

That was all the incentive Josh needed. He didn’t desire to be a leopard for the rest of his life. Tori was gone already, and Josh’s heart ached, but he didn’t want to share that fate. Even the next five minutes was plenty of time for him to lose his humanity forever. 

Diving towards the door and to freedom, Josh had taken his eyes off Tori, assuming she would be licking the cum from her cunt once more. Yet, before he realized what was happening, Tori was at the door, faster with her feline form. She layed in front of it, thrashing her tail impatiently. Josh had no chance of moving beyond her and reaching the door!

Josh backed away, looking for an angle at which to pass her. He tried his best to avoid her gaze as he did, not wanting to see the lust reflected in her eyes. Josh figured any motion might trigger her to raise her tail and beckon him inside for one last fuck. He had only one chance to resist her before help could arrive. And with the instincts screaming at him, Josh wasn’t sure he could resist!

Lost in his fear, he barely noticed the musk wafting into his nose, so strong it made his head swim. The leopardess was moving towards him, her winking, dripping sex high in the air and begging for him. It was maddening that his cock needed to be surrounded by those tight folds again after two consecutive fucks!

Josh walked towards his mate, his waning human consciousness telling himself that it was simply to find a way past. He didn’t want to fuck himself into a leopard. He couldn’t want it. There was no way…it didn’t matter how good it felt…it didn’t matter that he could be with Tori…mate her as often as he wanted…did it?

Human realization only returned at the sensation of his penis deep in her folds once more. Josh, the human, was mortified; he knew he needed to pull out, that it was the only chance to regain his humanity. He understood that, deep down. He truly did. But it felt so good, so right in a way that transcended human understanding. 

As the speed of his thrusts intensified, so, too, did the changes to his visage. Gone was any semblance of human lips, the gums darkening as his cheeks puffed up around them and his whiskers sprang out to full length. His skull cracked as the bones shifted, removing its rounded shape as it flowed into his lengthening muzzle. He could feel his skull contracting around his braincase, pressing almost painfully around his humanity. 

Yet, Josh didn’t care. The haze the changes brought with it made it easier to give in. The fleeting parts of humanity wanted to pull away and revert. Buy, why? If the pleasure of being a cat subverted his human needs, why was he struggling? Was this what Tori felt in those final moments before she gave in? Josh found himself powerfully curious to submit himself to such primal urges fully. 

He closed his eyes, letting his cares go, and the leopard take over. The final concepts of resistance faded along with the remnants of his human thoughts. He was only a beast now, a cat in rut. He needed only to spill his seed, feeling the pleasure of feline sex over and over until his mate was filled and spent. 

Eyes still closed, another urge played over his mind, one to bite down and claim the female as his own. But something was missing. His muzzle had stretched to the proper length, but where were his fangs? He had nothing to bite down on the nape of her neck with!

He needn’t have worried for long. An intense itching from his gums signaled the growth of two impressive dagger-like fangs, baring down towards Tori’s nape. With a yowl, Tori felt the yellowed canines digging into her flesh. He needed to claim his place on her back before filling her full of leopard cum once more!

The rest of his dentures were soon to follow, six pairs of incisors and sheering molars taking shape. The irritation of them cutting bloodlessly through his tougher gums was only momentary, washed away by the pleasure of sex as he brought himself to edge.

Josh opened his eyes to a world far different than the human perspective he had been accustomed to all his life. Edges were sharper, more defined. Though there was no movement, Josh felt himself continually scanning for even the tiniest speck of floating dust. His eyes had expanded, the pupils dilated inside amber irises. Colors seemed washed out, though it was of little concern to the new cat. The signature stare of a leopard regarded the room with intensity for only a moment before his eyes closed again. Now, he was focused on the final stretch of mating. 

With that, the physical and mental transition was complete. Josh was all leopard in his lust as he thrust into his mate rapidly. The final threads of humanity cut from his soul, Josh had no need to hold back. With a final, mighty roar, the male felt his balls throb, and his cock spasm, his mate’s cunt milking his penis for all it was worth. 

Too late, the door burst open, and the zookeeper returned with his boss and several attendants. Though the woman had a glowing book in hand, she immediately closed it upon seeing the two fully-formed leopards. With their yowls of lust and the stench of sex in the air, it was obvious what path they had ultimately chosen. Not bothering to chant the incantation, she motioned for the other humans to leave and prepare one of the empty habitats. 

Neither leopard bothered to react. Both were focused on the waning pleasures of leopard flesh and contentment with what their actions meant for their species going forward. Nothing the former humans had ever felt before provided so much fulfillment. It made the goings-on of the world around a trifle when compared to feline simplicity. 

The realization of what they had done was not lost on either of them, even in their post-orgasmic reverie. They had fucked themselves into cats. They would live the rest of their lives in this zoo on display. But that notion did not bother either of the former humans. 

In their exhausted state, neither cat resisted as they were coaxed towards one of the cages. Their feline sides were enticed by the scents of food. And the still-human parts of their minds, though minute, knew that they needed a suitable place to live in their new bodies. Josh’s body was content knowing he had mated. Tori’s heat would ensure she would be pregnant by the week’s end. 

Josh would willingly follow her into this new life. He was slowly beginning to accept the powerful drives of the cat he had become. Josh was handsome, a proud specimen, powerful, and lithe. He was young and virile, and could easily sire cubs. And he had a willing and loving leopard mate to live out their lives together. What more did he need?

******

Several months passed as Josh and Tori grew accustomed to their new lives as Amur leopards. Through their human selves would have gone insane from boredom, they were ruled by leopard instincts and desires. Those instincts did not mind twenty hours of sleep and regular downtime. Their souls were still present, and they would never forget their former humanity. It was simply easier to live in the mindset of the cats they had become. 

Sex was frequent at first. Ready to copulate every few minutes or so, Tori pushed Josh to mate as many times as he was able. Forgoing food and not caring about any human watchers to their habitat, they kept up their copulations. Tori found the frequent matings painful, her insides rubbed raw and causing her to lash out at Josh on several occasions. Yet still, she was compelled to mate for the better part of the next five days, whenever they were not spent or sleepy.  

Tori’s heat soon dissipated with the knowledge that she was pregnant. Neither leopard seemed to care; sex was a necessity for when Tori was in season. Without it, both were content to indulge in other feline habits, such as play, feeding, grooming, and sleep. 

Both of them were treated with the utmost care by the zoo staff. Part of that was due to the guilt the establishment felt over the unintended change. Even though the pair had partaken in the instincts willingly, it was still the zoo’s lack of protection that had set events in motion. The other was due to Tori’s healthy pregnancy and the promise of aid in repopulating a critically endangered, beautiful cat. Both were given treats, new toys, and plenty of caregiver attention. They reciprocated with affection, loving the care that sat well in their new leopard psyches.

Having properly inseminated a female, Josh was content to laze around all day, especially since all of his needs were taken care of by the zoo staff. It was strangely fulfilling to live a life for the simple joy of existence. All notions of school, work, chores, or money were erased for the simple needs of a leopard in zoo care. 

Even Tori’s pregnancy was a stressless affair. Though her belly grew distended as the weeks went on, she felt no discomfort, no nausea, or fatigue as her pregnancy progressed. Tori would never have contemplated being a mother, especially not at her age. But now, after birthing a litter of three cubs, licking them clean, and feeding them with ample milk from her teats, she couldn’t imagine anything more satisfying. 

Josh was considered the model father. Though most Amur leopard males took no part in raising cubs, Josh was happy to play with his kittens. They often took turns swatting at his tail as he lazily rested, and he delighted in encouraging them to leap and play like cats in the wild. Thus, he was not separated from his offspring, as might a naturally born leopard. Such displays excited zoo patrons from seeing an experience they would find nowhere else!

For the most part, the two lived in bliss with their new family, wanting for nothing in their new lives. Even the notion of returning to humanity, though impossible now, was not something that either craved. The reality of remaining leopards for the rest of their days was exciting, not frightening or depressing. Unlike natural leopards, they would live far beyond the fifteen to twenty-year life span that made up most cat’s lives. Their longevity would be more akin to the human lives they would have lived outside the zoo. 

Part of Tori’s humanity still shone through, in particular, her rebellious streak and her selfish impulsivity. She loved scaring the guests, roaring and growling to show off her impressive fangs. Knowing her urine could change any cheeky teens or visitors was a powerfully tempting prospect. Yet, after the last case of unwilling infection, her enclosure was closed off with a glass pane. Had the zoo allowed Tori her way, any empty cages would be filled with new Amur leopards, ready to help repopulate the species as she was!