“Ummm, excuse me? What is this?” Yvette called out to the waitress as she passed by to do her table check, a concerned look on her face. It was not the first time she had been called over to this particular table, and it took all of her training to tend to the guests politely without calling attention from the rest of the restaurant. They were busy, it being a Friday night, but the trio of women didn’t seem to notice they weren’t the only people there. 

The women had nothing but complaints since they had sat down to dine forty-five minutes ago. From the price of the wine (not something she had control over) to the temperature of the establishment (far too cold even though the day was temperate) and the appetizers (far too greasy). Now that their entrees were there, Jillian had thought things would calm down. Though like with every other part of the dining experience, that was not to be the case. 

“Can I help you, ladies?” Jillian tried her best to keep her tone pleasant, though it took everything she had to maintain that level of professionalism. She had her share of difficult clients in the past, of course. But be it fatigue, or the general attitude of the women, or something else she had no immediate cause for, these particular ‘guests’ were really grating on her nerves. 

“I wonder about that,” said Yvette, while the other two looked on over their wine glasses. Normally, one rude guest was kept at bay by the other guests at the table. In this case, it seemed all three women were of the same mind, for worse. 

“I’m not sure anyone in your establishment can be of help,” Yvette giggled, prompting a corresponding giggle from the other women. As much as Jillian had come to learn to keep her composure in front of guests, this was all too much like the mean girls she had dealt with in high school, forcing her to relive that past trauma. Almost to the breaking point, Jillian felt she could hardly handle another word from the women. And, it seemed they had much more to say on the subject…

“Maybe you have more competent wait staff waiting in the wings? I’m sure they didn’t send us their star,” another of the women, Lianne said, that same mean girl smirk that sent shivers of trauma through Jillian’s spine. 

“Can I get your name, dear? I want to leave a review for you. I hope you don’t like stars!” Yvette said, and all three of them laughed out loud at that. 

By this point, Jillian could feel the tears running down her cheeks. Too many painful flashbacks of high school bullies hit her, and Jillian was left to stand there, stared at by the women as well as the nearby tables. It was the worst situation she had ever been in for all her years as a server to be broken down in such an embarrassing way!

“Can I talk to your manager? Maybe they will show the level of professionalism that I would expect for the prices you’re charging,” Samantha, the final of the trio, laughed. It was all Jillian could do to make it to the office at a reasonable pace. She quickly closed the door and tried not to sob too loudly lest she be heard by any of the tables around. 

Within two minutes, Heather, the manager of duty, made her way out to the table, a smile plastered on her face as she greeted the diners that had made one of her star servers tear up. As ready as much as she could be to deal with a problematic table, she assumed they would be nicer to the manager. She was dead wrong. 

“It takes this long for a manager to get here?!” Yvette said, taking a sip of her wine. 

“They really will hire anyone to manage this place,” Samantha sneered, trying to get a rise out of the woman. 

“So? Out with it. What are you going to give us? We aren’t coming back here, you know. And our social presence is…well, you’re going to regret such subpar service,” Lianne said. Narcissists, the lot of them. 

“I’m so sorry your experience tonight has been less than satisfactory. Might we offer you an exclusive dining experience? Tomorrow night after closing. You will be the only ones in the restaurant, and we will have a special menu just for you. Interested?” Heather said straight-faced.

“Do you give these out to everyone?” Yvette said, skeptical.

“Only to customers who have a particularly disappointing experience,” Heather said politely. 

Looking at each other and muttering for a few minutes, the three women looked up at her in tandem. “Tomorrow it is,” Yvette said, getting up with the other two in tow. They hadn’t bothered to pay for their wine and meal thus far, but Heather hardly cared. Not with what she had planned for them…

******

“Hello? Sever?” Yvette called out, the lights on but no one else around as the trio entered through the unlocked door.  

“Figures. They probably forgot. This place is going to be shut down by the time I’m through with them!” Lianne said spitefully. 

“The nerve of-what!?” Samantha called out as rough hands wrapped around her, sticking the pointed tip of a needle into her neck. The other two women were quickly restrained and injected, leaving them powerfully confused and afraid. 

“Welcome, welcome! So glad you could make it!” Came a familiar voice, and the trio looked up to see Heather the manager coming toward them, clapping her hands. A man in a lab coat was beside her, leaning in to give her a kiss. It looked terribly out of place for a restaurant, though with the other men holding them in position, nothing about the situation was normal. 

“What the fuck…let us go! You’ll be hearing from my lawyer!” Yvette said, though was worried about the prickling against her neck where the needle had been injected. It was beginning to itch fiercely, making her concerned she would soon be unconscious. 

“I wouldn’t think so, no. You won’t be talking to anyone again after the serums take effect,” the man said, pulling out a pad and starting to make notes.

“Serum?” Lianne called out, the word making her tremble to the core. What had they been injected with? Were they going to be kidnapped or sold off for trafficking? Or worse?

“I wouldn’t bother asking. You’ll find out soon enough, and you likely don’t have enough brain cells between the three of you to comprehend my genius,” the man said, taking more notes. 

Yvette went to call out again when an ache in her tailbone made her pause. It started as a dull pain, feeling something pushing against the skin. It didn’t hurt, not exactly, but it was powerfully discomforting, continuing to press from the flesh like a tumor. Soon, it was impossibly large, and the more Yvette seemed to focus on it, the more it felt as though…

With a sudden motion, the thing growing out of her backside moved, and Yvette was stunned as shockwaves ran through her spine, thinking she had another limb back there. Confused beyond belief, it wasn’t until she looked at Samantha that she saw the same thing sticking out of her backside, moving as much as Yvette’s own. It looked for all the world like a tail, a thin strip of flesh wagging back and forth. Almost like a dog would have… 

“Perfect. All three are growing tails at the same rate. The updates are proceeding as planned,” the man said, making notes on his pad. Yvette was barely able to hear him over the panic the changes were causing. How in the world were they all growing actual tails?! It made no goddamn sense!

“Genius, as always, my love,” said Heather, giving her apparent husband a kiss. Yvette found it sick that any couple could get off on the suffering of her and her friends. If they got out of this, then she would surely…

With that, the trio was left to panic, feeling the growths on their backsides continue to wriggle against their will. Worse was the itching spreading from the base of their spines, spreading over the protrusions and covering them with what could only be a coat of hair. It was powerfully disconcerting to think they had what were likely canine tails hanging from their backsides. The sight of such growths on her friends, blond on Lianne and brown on Samantha made Yvette terrified for her own fate. 

“You can’t do this!” Yvette called out, though her efforts were for naught. With the growth of their tails and the itching of what had to be more fur over her form, it was a wonder she could even protest, the trio being firmly in the clutches of a literal mad couple. 

Yet, all that faded with the realization of a tingling in their loins. Yvette felt painfully aroused against her will, her slit getting moist and almost pulsating with need. It was maddening with the need to touch herself, though with her body restrained, she could not do so even if she was inclined. She was left to moan audibly, embarrassed as her two cohorts showed the beginnings of damp stains on their blouses from the sheer lust they felt.

It soon became much worse from the sensation of her jewel rubbing against its entrance as though growing. Such should have been impossible, though there was no denying the rapid growth sprouting from her loins, pressing against the tip of her panties and eliciting a sensual moan. By this point, something had descended from within, nearly falling out of her slit and creating an unfamiliar weight on her loins, followed by something swelling within. The moment the term ‘testes’ came to mind was the moment that something on her elongated clit opened from the tip, and fluid started leaking from it. It was powerfully embarrassing, though Yvette was prompted to start humping the insides of her pants, needing the stimulation to the tip more than anything she had in the past. Though embarrassed, she was soon given sight to the fact all three of them were in similar straights, each with leaking loins and expressions of lust and confusion spreading over their faces. 

“It’s a funny thing, this particular strain. Nearly impossible to completely rewrite the host’s DNA, you see. It tries so readily to reassert itself and will, over the course of twenty-four hours, completely dissipate from the host. You will, in fact, change all the way to the target species, dogs, in this case, but return to your human forms after that much time has passed,” the doctor said, and Yvette allowed herself to sit up at that. She didn’t like the notion of being a dog, didn’t think it was possible despite a wagging tail and what had to be a cock hanging from her loins. But to be turned back eventually…it was pure humiliation, yet, she could get back at them, sue the living daylights out of…

“That is unless certainly stimulation is not undertaken. Heavy activity, an increase in heart rate, and above all, sexual activity will solidify the serum and changes within the host. In essence, you can, quite literally, fuck yourself into the new forms. I personally prefer that to be the case. I always give the subjects the option to change back after I collect my data, after all. But if they like the new forms enough to fuck in them, well, that option is always there as well. I’m eager to see which one you’ll all choose!”

Yvette felt her cheeks blush at that, the ache in her new penis at the forefront of her thoughts. It should have been impossible for her to be aroused by possessing a male erection, and in front of her friends, no less. But with the intense ache in her loins, it seemed impossible that she could go twenty-four hours within cumming, much less twenty-four minutes! She couldn’t imagine being a dog, changing any further, and being a male at that!

Yet, the sensation of hips compressing with a few painless cracks, pelvis making it impossible for her to get up on two legs even if she was free to, made her certain of her eventual fate. By this point, the changes seemed enough for her captors to let go of her. In trying to get up to escape, Yvette fell back to the floor, unable to stand. Worse than that, her clothes, loose from her thinning stature, slipped off, leaving her clad in only panties and filling her nose with the stink of precum. A scent that was powerfully attractive to her nose, something she had not been aware had become black, coarse, and moist, canine in configuration.  

The tension in her groin came to a head, the stimulation against the fabric enough she could cum at any moment, and, with it, lose her humanity. So, against her better judgment, Yvette took those off as well, letting a wrinkled cock hang in the air and filling her with disgust. It was soon to become far worse than that as the skin-shaded organ darkened to red, the tip growing pointed and the base swelling into a semblance of a canine knot. A thick foreskin sat bunched up at the base, hitching up her new cock, though its erection sat eager and ready for the orgasm to come. 

The sad reality crossed her mind with the powerful need to touch herself at the forefront of her sensibilities. If it was this needy at the onset of the changes, how could she possibly last more than twenty-four hours before the reversion? And more to the point, there were other criteria for accelerating the process she had no way to prepare for. It was an impossible situation with no acceptable end, her captors dangling a cruel carrot before them!

She was not the only one to undergo the same changes, Samantha and Lianne each pulling off their undergarments lest they cum unexpectedly. The same colored fur to match their tails now covered their balls and groins, spreading down their legs and up once formerly perfectly formed bellies. The urge to scratch was overpowering, as much as the urge to touch themselves. It seemed impossible they could resist long enough to relieve the changes and return to their human bodies. 

“Ah, yes, I must admit there’s a certain pleasure to changing bitches such as yourselves, though bitches are too good for you, I feel. Not with how you treated my lovely wife! Most people we change are vagrants, but the chance to get three subjects such as yourselves was too good to pass up! Not to mention, I’m sure that none of you said a thing to your contemporaries about this exclusive dining experience, wanting to bask in your victory and free goods, so to speak. Well, even if someone came to find you, they wouldn’t expect you to be dogs now, would they?”

“Though, I’ll make you a deal. We won’t come after you if you can manage to change back. You’ll be free to pursue any legal retribution you wish. We’ve manhandled you, injected you, and held you against your will. Not that they could prove the viability of our serums, mind. But that should be enough for a conviction, yes?”

Even with that minor hope before her, Yvette figured it was a moot point, given the intensity of the ache in her loins that needed attention. It was everything she could do not to touch herself and seal her fate. Looking to the other women to try to take her mind off sex, the sight of them made her drool in a horrifically unexpected way. Samantha, for her part, had her pants and panties off as well and was trying to get away, crawling on the floor with her tail in the air, unable to stand. Yet, the sight of her hips parting, her ass hole moving to the base of her tail made Yvette powerfully confused. It should have disgusted her, and part of it certainly did. No matter what she did, Yvette couldn’t tear her eyes away. There was something about a canine rump on her best friend’s backside that seemed to really do it for her, making her cock throb and leak even more.

Slowly coming into her awareness was a scent in the air, a thick, musky odor that had her enamored with the sight of the canine hind end Samanta was showing off. It was almost heavenly, sending another bead of precum through her own dick and making her whine in a canine cadence that left her shocked and afraid. It was as though some sort of canine scent glands had developed around her anus, and it seemed to draw her in like a beacon, the smell more pleasant than anything she could recall. In fact, she wanted more…

Yet, before she could make a move on her friend against her better inclinations, the familiar tingling of change started to play in her hands. Looking down with dread, Yvette was in time to see her fingers pulling into the base of her palms, cracks and pops signaling their descent. Nails turned black and thickened, stretching from fingertips into blunt canine nails. Thumbs were reduced to nubs, pulled upward with lengthened wrists, and left as functionless dewclaws. Calloused skin made up her palms and the tips of her fingers as the spaces between itched fiercely with the growth of white fur. With the thick skin of webbing between the digits, Yvette was left with the inability to move what had been dexterous fingers. The fact that she could no longer touch herself was of little consolation with the truth that she had lost her hands, her primary way of interacting with the human world. 

All the while, fur was encroaching over her form, covering every inch of her skin. As she watched, entranced, black spots started to pepper over the skin, giving her a spotted look that reminded her of a Dalmatian. Yvette hardly cared what breed of dog she was becoming, not wanting to be any canine or in such desperate need to get off!

It seemed the more she changed, the more her inhibitions were diminishing, the need to get off almost all-consuming. No matter how much human disgust she tried to muster, Yvette couldn’t help her thick, canine nose honing in on the buttholes of her former friends, thinking about getting a closer sniff and feeling the tight contours wrapped around her cock. A clenching in her backside made her equally sure she wanted to be on the receiving end, never imagining enjoying anal stimulation but craving more than any vaginal sex she had ever desired. All she could do was sit there panting with a tongue larger than her face could manage, breathing in the canine musk in the air and thinking how wonderful it would be to finally give in…

“Well, well, what interesting results! It looks like you won’t make it, after all. In fact, this might be the earliest that anyone’s given in! I take it you’re very prudish, dear? Well, time to let the dogs out, so to speak. Stop lying to yourselves and fuck like the dogs you are!” The scientist said, his wife Heather laughing along with him. 

“I wish my entire service staff could watch you, but they don’t work with us, I’m afraid. Oh well. When you go missing, the news will report it, and I’ll make sure my servers know all about it.” Heather said, a sadistic grin on her face. How a woman could be crueler than anything Yvette and her friends had mustered, she couldn’t begin to fathom. Not only were they being forced into animalistic bodies against their will, not only had they lost their sex but kept their inclination toward male anatomy, but they were being mocked and humiliated all the way! It was beyond horrific, and there was still much more left to go before their inevitable fates were cemented. 

Yvette was taken from her terror with the sight of her nose in her periphery, long and black and slitted up the sides, breathing in the heady stink of canine musk more readily than anything she could imagine wanting. Without thinking, Yvette found herself standing on all fours, the position more comfortable than it should have been. Legs cracked and shook before her stance became more comfortable, and her front paws sat awkwardly with her torso in its current structure. It was all she could do not to move toward Samantha, whose back was turned, as though willing herself to move toward the door. She stood there, changing as much as the other two. Still, her brown tail was up, raised, and slapping from side to side, wafting those potent male pheromones her way…

A series of cracks and pops resonated through their torsos, enough to prevent Yvette from moving for the moment, her only reprieve from the inevitable act of mating. Her spine started to extend, her feet pushed up and stretched, blunt nails growing out of them and clicking on the floor as her toes retracted towards the beginnings of her new hind paws. Heels pulled back, leaving her to kick off shoes that barely stayed on in the first place. Breasts hung there precariously, losing their fat and mass toward a thinning line of canine chest and belly. New nipples poked their way out of her chest down the line towards her belly, though there was nothing to be done for it. 

With all the changes to her form, Yvette was not expecting the sensation of something goosing her backside, making her raise her tail and clench her anus in an almost inviting way. The nose at her backdoor seemed to shove its way in where canine anal glands had developed. Looking back, she let out a decidedly canine whine, seeing Lianne’s cracking blond snout pushing into her, still-human eyes blazing with equal parts lust and shame. Yvette wanted to growl, snarl, and beg for her to stop. But it was all she could do to turn around and try to pull away, looking at her friend with pleading eyes. 

Yet, Lianne had another idea in mind. The presence of a canine anus in her nose was not the only sexual inkling she possessed. Instead, she came around, raising her own Labrador tail and wafting her anal glands in Yvette’s direction. It was impossible for Yvette to resist taking a sniff. And the moment she did so, the urge to mount and hump came to the forefront of her thoughts. After all, Yvette was always the leader of their group, her friends the clingers-on to her whims and ideas. And if she was going to lose her humanity anyway…

“That’s it, you bitch! Mount him! Fuck it all away!” Heather said, and for a moment, Yvette felt a hint of resistance come to the forefront of her thoughts. She could hold back and could defy those that were humiliating her. She could-

The sensation of a puckered anus seeking her cocktip elicited a canine whine from her lips, Lianne determined to take her place as the new male’s beta. With such pleasures for her to take, Yvette had no choice but to rut into her friend’s rear, shoving her cock inside and feeling the tightening muscles around her rod. It was far better to her than anything human could manage, though it was likely a facet of the serum that forced her hyper-sexuality. Still, the ache of her cock embedded into a male made her whine, getting up on fully canine haunches and thrusting with no regard for her mate’s comfort. 

Mind awash in canine pheromones and unable to muster regrets, even the sight of her hair falling out around her or falling from the head of the soon-to-be Labrador failed to cause Yvette to pull out. She could feel her balls slapping against her mate’s own as well as the swollen knot pushing against her pucker. She knew the moment it dived in would be the moment their fates would be sealed, though there was nothing she could do in the face of such potent stimuli. At the time, it seemed to be so worth it!

With each thrust, Yvette could feel her face starting to press forward, cracking into a muzzle that she could see in front of her face. Her skull, too, was shrinking, and Yvette wondered if her mind would go with her head. There was certainly precedence for that, not wanting to remember this humiliation and wishing not to have to remember if she was to lose her humanity. Though as the moments passed and her head seemed to sink into its canine state, there would be no reprieve from the truth she might never forget her lost human life, even as she fucked her life away with the desperation of an animal. 

“RRRRWWW RRRROOOUUU RRRRWWWWW!” Yvette tried to call out, but only a canine whine escaped her lips, no traces of the human words in what she’d tried to say. They would fall on deaf ears regardless, but she wanted to at least say goodbye to her humanity before the inevitable release. It was coming like a train now, and there was no way to stop it as Lianne’s rectum opened. Yvette’s red rocket popped in, making her howl as her canine cock spasmed. 

It was like nothing she had ever experienced before to blow from the tiny orbs at the base of her sex. Unlike the steady orgasmic build-up she was used to, this came as a big explosion, one nearly enough to make her white out. The pressure on her knot was such that there was no hope of resisting the moment it started to pop, leaving Yvette to experience the release of a lifetime. Even the fear for her future or bestial damnation was beyond her as a minute amount of canine cream was planted into her former friend-turned-dog’s womb. 

For a moment, Yvette wondered if she would be the only one to be damned and if perhaps Lianne would be spared the same fate. Rather than hope, however, the jealousy of such an act left her angry. Would she be stuck as a dog while her two friends were freed to return to their human lives? Was she the only one weak enough to have succumbed to the doctor’s tauntings and the inclinations burning into her own mind? 

She needn’t have worried. Even though Lianne had no way to cum with her body in its current state, the doctor moved over and reached down, gripping her canine penis even as she whined, as though asking him to stop. It seemed the doctor had no inclination to leave her hanging, stroking and petting her fully canine head. “There, there, boy. Just let it happen. You want to be a good dog, don’t you?” The words had the desired effect as Yvette’s nose filled up with the scent of canine cum, and the rectum she was embedded in started to vibrate from the much-needed release. 

All the while, Samantha was at the door, trying to scratch at it with canine claws in a desperate bid to get out. There was little to be done for it; even if the door hadn’t been locked, there was no way that canine paws could work the knob. She was forced to whine as her muzzle pushed out and her eyes browned over, her chocolate lab visage taking over the last remnants of her humanity. 

“RRROOWWW RRROOOWWW RRROOOO!” She tried to bark, but it seemed like her captors had a different interpretation in mind. 

“Ah, what’s wrong, boy? Do you feel bad you missed out on all the fun? Don’t worry, I’m sure your new brothers would be more than happy to let you join them!” The doctor said, as one of the guards planted a collar around her unsuspecting neck and dragged her towards Yvette’s backside. 

Yvette, figuring there was little point and carrying a vindictive streak against her friend for being able to resist as long as she could, raised her tail deliberately, wafting her scent into Samantha’s canine nose. Like a moth to a flame, there was no chance of Samantha resisting goosing the orifice, drinking down the offering, and slobbering all over it before lining up her needy canine rod. It was a difficult maneuver, given Yvette was already embedded inside their other friend, but eventually, Samantha managed, and Yvette felt the prick of a canine rod entering her bowels.

With the pressure of penetration came an ecstasy Yvette couldn’t have expected, making her cry out from the penetration. It was far better than she could have imagined, canine prostate gland on fire from the force of fucking. Enough to make her prick come to life once more, Yvette started breeding Lianne once more, forming a train of sorts as the three gave in to their obvious urges. The pain of being opened up, more than she was ready for, was only a drop in the bucket to the pleasure she eventually received, making her howl out with a canine voice. Sperm was deposited into her backside, as she did the same to her friend, locking them all in place. 

There was some sense of solidarity in knowing all three of them failed to resist, something better about not being alone. It had been an impossible task. Those sadistic scientists knew that, of course. But, at least she had not been the only one to fail, all her scheming and planning and work to get to her place in society robbed from her as it would have been from anyone else. A small consolation, but at least one she could live with!

Even as the trio sat there, tied together, the onrush of canine instincts did not seem to take over. They were present, certainly, and there was a conflict of cognitive dissonance being homosexual dogs interested in each other’s bodies and the women they were, terror at their lost forms. Yet, no matter how much they struggled, they could not sink into their new psyches, likely forever aware of all they had lost and all the horrors the lives of animals would bring them. Knowing her mentality was not enough to resist was now a permanent punishment!

“There, there, what good boys you are! Good dogs! You’ve provided us with such good subject material! We’ll make sure you get a good home where you can all stay together! I hope you got along well enough in your old lives because you’ll be tied together now,” The scientist said, cackling at his words as he and Heather continued to pet the trapped dogs, a chocolate Lab, a yellow Lab, and Yvette, who would spend the rest of her life as a Dalmatian. The form that was now in the center of a trio of knotted male dogs, stuck together until their cocks finally softened…

******

With that, the trio was taken to a kennel, an operation the pair had set up to fund their research. Though they could assume the husband had been a vet or researcher there, it mattered little with their fates in the air. They could not communicate with anyone in the outside world, much less with each other. All they could do was articulate their needs, at the forefront of those to hump and rut and partake in canine orgies multiple times a day. 

With no help coming to return them to their new forms, the three of them were left to laminate their fates, taking solace only in the sexual release they got from each other’s forms. It was soon discovered they would not have to wait long. The doctor eventually found a home for the three of them. The notion left them all terrified, thinking their solidarity was the only thing good remaining in their lives. But, to their delight, they were soon informed they would be given a home together, the three of them unneutered and allowed to partake in their sexual urges while being kept pets. A small bit of consolation in a tortured life of being a simple animal in body while remembering all they had lost in former human lives…