“So…about what I said on the phone…” Liam started, not really sure how to broach the subject. He’d had the entire bus ride on the way there to try and formulate the words. But, there was nothing to be done for it now that it was time. 

Getting a scholarship to college was something Liam had worked hard for in his high school years. But, given the low bar of education in his small town, Liam soon found that college life was far more difficult than he could have imagined. No matter how much he worked, the combination of not getting along with any of his dorm mates, long classes, and relentless study sessions, he couldn’t keep up. What was a free ride to college soon became impossible to maintain, and Liam was not able to keep up his GPA. And even if his parents had the funds for him to attend once more, they surely wouldn’t cough up the cash. 

Their reaction was exactly what Liam had been expecting. Though not outright anger, their disappointment was palpable, even with only a few words. Worst of all, they seemed not to be surprised, bringing the talk back to their own lives on the farm, things in town, and generally ignoring anything Liam had to say. It was almost worse than dealing with their ire outright, being treated as almost nothing. Still, it was his own actions that had brought him to this outcome, and his own shame deserved for his failure.

Eventually, his parents brought up the elephant in the room, one that Liam had been dreading. “You need to get a job,” his dad said bluntly, Liam knowing that to be the case but not wanting to deal with it just yet. 

“Doing what?!” He finally yelled, the disgust at himself turning to ire and being deflected on his parents. Such would be difficult, his parents having to drive him into town to work at one of either fast food joints or grocery chains as he had in his teen years, to be seen by his peers and reminded consistently of his failure. He certainly couldn’t imagine doing so again. If they were going to force him, he could at least have them do the leg work on getting him one!

“You can at least start by working the farm,” his mom said calmly, not responding to his anger. In some ways, that was almost worse. He hated working the farm, couldn’t stand the stench of animals and their waste. Besides, his smaller stature made lifting and working almost out of his ability. His goal had been to get away from all that, to get out and live in a city like most of his friends. But with his grades sunk as they were and the funds lacking to allow further attempts, his only option was to relent and do whatever work his parents required in exchange for his boarding. 

The next day he was up at the crack of dawn, moving hay bales and feeding the chickens. Why they needed his help when they had farm hands, he had no idea. Liam wasn’t even being asked to help them, sent off on his own to do the job of several people. By noon, he was sweaty, reeking, and exhausted beyond belief, something he hadn’t felt in over a year since he had left for college. 

This afternoon he was expected to work with the horses, shoveling manure, refilling hay bales, and the like. Their parents currently had three stallions, occasionally loaning them out to breed or collecting their sperm for sale. Until last fall, they had a mare as well, but she died from an unexpected organ failure far too early for her age. Liam couldn’t bring himself to care given his distaste for the animals in general. Regardless of how many animals they still had, it was not looking to be the best day of his life, let the first one of many that would bring him only despair. 

Yet, going in for lunch, Liam was shocked to be handed a beer by his dad, something they had never shared in a long time. Still underage at 19 but hardly his first time, Liam took it rather gladly, finally perking up enough to get through the rest of the day. It seemed his father had forgiven him enough to treat him, and he had it with lunch, feeling emboldened. Never seeking admiration from his father before, the simple gift was enough for him to actually try his best!

It wasn’t twenty minutes after he was back to work that Liam felt a queasiness in his stomach, one that almost made him need to run to the bathroom. Still, he was able to make it without vomiting, ultimately figuring he didn’t want his father to think it was the beer. Besides, if he needed to throw up in the barn there would be little difficulty to clean it up. So, he made his way to the stallions, biting the bullet in cleaning up after them.

To his surprise, the horses seemed rather happy to see him, whickering, snorting, and walking over him, lipping at his shirt and hair, signs of equine affection he’d only seen them display in other farm hands. “Hey now, I don’t have any treats,” Liam said, not really sure what they wanted or why they were being so amorous toward him. It was kind of nice, though, never having a bond with the animals before. 

Just then, the feeling of illness started up in his stomach again, as though a build-up of gas he couldn’t quite control. Liam was belching before he knew it, and against his will, he let out a rather pungent amount of gas, the scent of which almost made him sicker. The smell was powerfully disgusting, all too familiar from working with horses and reminiscent of their leavings to a point that made Liam very concerned. 

It was a numbness in his lips that really had him distressed, as though he had been poisoned by the beer or something he’d eaten. Panicked, Liam reached up to rub his lips, expecting to feel them cool to the touch. Yet, the texture that met his hand was far softer, almost rubbery with a fine coat of hair sprouting around them. It was a texture he was intimately familiar with, growing up on a farm as he did. Almost like a horse…

Terror burrowed into his mind as he pulled out his phone, not wanting to know what he would see but having a theory all the same. It was still a shock to view his lips massive, swollen, and looking out of place on his features. Worse than that, his nostrils were flared, seeming to merge with the upper part of his lips and wider than his face should have naturally allowed. Finally, twitching in his ears made him look up, the tips getting pointed and stretching an inch and then two, a light dusting of brown, velvety hair growing over them. They looked too much like the ears of the horses in the stall with him!

Shocked at the sights of his changes, Liam was distracted by the gas building up, letting out another loud bout of equine flatulence. With it, swelling in his ass prompted him to reach down, and rubbing the skin through his pants made him sure he was getting larger. Worse was the itching against the skin underneath, as though fur was covering the skin. His pants were becoming impossibly tight to the point that Liam was sure they would pop at a moment’s notice. In desperation, Liam tried to pull them down but found that the tightness was such that they would not relent from his hips. He was forced to feel his hips growing even larger, the skin of his ass cheeks parting to leave his anus exposed to the fabric of his underwear. The contact sent shivers through his spine, making him groan and bend over to try to alleviate the sensation. It was becoming more and more apparent the only way he could get his pants off was by the force of his massive horse’s ass ripping them open!

It was soon to become much worse as his fingers suddenly started to stiffen while trying to get under the bands of his pants. Pulling up his hand for inspection, Liam was shocked at the sight of his fingers shrinking around his middle fingers and moving toward the palms of his hand. Efforts to move them seemed futile as they lost joints, bones, and muscle, looking to reduce themselves to nothing within the bones of former hands. 

The reality of his situation hit him full force as his middle fingers started to swell the width of his stretched wrists and palms. Worse was the numbness on the tips, nails moving to surround the entirety of the digit. The finger itself seemed to be burrowing into the nailbed as the entire nail moved into an oval shape with a series of depressions underneath. Liam was intimately familiar with the underside of a horse hoof, though had no desire to see it happening to his own hand!

With the loss of his one hand, the other was soon to follow, and Liam was stunned enough to drop his phone onto the dirty ground, unable to hold the device. He suddenly realized that his lifeline, his way of interacting with the world and getting help was being robbed from him. Though he had no idea how such a thing was possible, it seemed he was turning into a horse, perhaps all the way if the changes thus far were any indication. Who could he possibly ask for help in the face of something so horrific!?

The changes, relentless as they were, continued over Liam’s form, more horsehide and hair playing up his chest and belly. Stomach distending somewhat, Liam could feel his shirt riding higher up on his frame, exposing the fur and horse hide that was seeping his form. To his chagrin, the hide was running down his pants as well, marking the rest of his skin for the change to come. If they kept up at this rate, he was going to be a full horse in a matter of minutes! 

Even his efforts to get out of the barn were in vain, his body top-heavy and leaving him to wobble back and forth with the attempt. A series of rips resounded through his frame as his ass finally tore his pants, leaving the furry skin exposed to the warm air. With the thickness of his horsehide, it was barely felt as his pants slid down the crack of his rear, enough that thinner legs allowed them to fall down to the dirty hay below. Underwear soon snapped too, far too large for the size of the horse’s rear he was developing. His shirt was being pushed precariously tight against the barreling of his chest and belly, soon to snap as it pulled over former pecs. Even his shoes felt tight, middle digits pressing against the stitching within and preparing to pop from the force of their growth. 

The aches of changes next started to play over his spine as something pushed its way out with a dull ache as a lump made itself known on his backside. Liam’s expanding posterior made it impossible to see fully, but as he focused on the growth, it started to twitch and then swish against the skin over his ass. There was no denying he was in possession of a tail as it itched fiercely, thousands of coarse, wiry hairs peppering its flesh as they annoyingly tickled his longer legs. 

No sooner did the tingling of his tail hair growing cease than a sudden, uncontrolled ache in his bowels prompted him to hitch it above his anus. Before he had a chance to even attempt to clench his bowels, a pungent fart escaped his backside, followed by several dozen large drops of rank horse manure. He had no control over his dump than any simple barn animal, making him lament his fate. The stench was rancid, something he loathed under normal circumstances but hated the fact it was coming out of him now, piling just behind his shoes. To top off his humiliation, the buzzing of flies started to swarm around his mess, playing over his backside and only briefly inconvenienced by his swishing tail. 

With the release of his bowels came a further bloating of his belly toward equine proportions, tearing at his shirt and removing the last of his clothing. How his organs were able to swell so much without killing him, there was no way to say. Though as ribs stretched, organs swelled, and skin swept up with hair and hide, there was no denying that he was getting closer and closer to equine proportions. The last bastion of his human clothing, shoes, were soon to pop from the force of what had to be growing hooves, the nails at the base of middle toes having expanded to the point where they were larger than the bindings. The stitching and glue peeled effortlessly away, the weight of his middle digits too much for the former human trappings. The rest of his feet were soon to alter as well, heels pulled back until Liam was left to shift his stance, unable to kick away the shoes lest he end up falling over on his front legs.

The sounds of footsteps coming toward him prompted Liam to look over, though with the changes to his stature, he was not able to remain standing for much longer. Nearly tripping over his weight, Liam let out a yell that scared him beyond the changes thus far. “NNOOOEEEEEIIIIGGGGHHH!” Came an equine-sounding cry, proving his vocal cords were also shifting, and with them, his human voice. If he lost that…how would he call out for help!?

Not expecting the incomers to be his parents, Liam felt his heart leap, rescue finally coming for him. “MOM! DAD! HHEEEEIIIIHHHLP!” Liam let out, trying to keep the equine inflections out of his voice and finding himself unable. Though his lips, nose, and ears were in an altered state, there was no denying his own visage in the features and that they would see the horse was their son.

And, they did, though their reaction was hardly what Liam was expecting. “He’s coming along so well! The potion really works wonders! He’ll be ready in a few minutes!” His mom declared, leaving Liam stunned by the realization. 

“He’ll be way more productive as a broodmare than anything else he could do around here!” Replied his dad, a rather sadistic grin on his face. 

“What do you meeeeiiigggghhh?!” Liam tried to whinny, but the words came out guttural and beastly, leaving him to ponder just what the hell was going on. Impossibility of the change aside, the notion his parents had anything to do with it was insane!

Though he was panicked, something specific about the words left Liam to wonder for a moment. They had said ‘broodmare’ right? Did that mean he would have to…but then, that was impossible…just as impossible as the changes themselves, right…?

With that, a sensation in his cock left Liam powerfully confused and embarrassed in equal measure. It was as though he was getting hard, turned on like nothing had before. His cock was at full mass by this point, comically undersized for the massive horse’s body he now possessed. It almost felt as though his testicles were being squeezed by a vice, and Liam let out a pained grunt as their seminal contents were expelled. With that, Liam went into a very confused orgasm, though the amount he produced, while impressive for the human him, was but a drop in the bucket for the size of the beast he was. 

For a moment, Liam held out a glimmer of hope that his cock might change to befit the beast he was becoming. It was a slim hope, however, as the tingling of growth and change did not seem to be encroaching over his member. And, besides, even over his panic, Liam understood the logic of not having a fourth stallion. They needed a mare, and as sadistic as it was to change their son in such a horrific way, there was no denying their intended goal as Liam felt the strange tingling encroaching over his sex…

Cock still slick with the watery fluids, Liam could nonetheless feel it being pulled towards his rear, which itself was now situated under his tail. Piss head sliding open, Liam was not prepared for it to widen impossibly, spreading all the way down his balls and taint to the point his testicles were engulfed, though they had already deflated from having spilled their burden. Though he could not see it, the breeze on his new opening seemed to encompass an ever-widening area, painlessly tearing without sound as it burned its presence into his backside. Surely, Liam had been cursed with a mare’s cunt by this juncture, though could hardly fathom the sensations of owning such a thing, stunned as he was. 

Worse was the sensation of his lips starting to moisten, as though brushed with some alien arousal, creating a heady aroma in the air that left him powerfully confused. As foreign as it was from his male counterpart, it took Liam a few minutes to realize what he was feeling. It was arousal, and even though there was no immediate reason for the heat, nothing around that was attractive. Expect for the stallions, and the moment that Liam noticed it was the moment he felt…no, he couldn’t!

“Look at that! He’ll be ready for the stallions in no time!” Liam’s mom said proudly, something he had not heard from her tone in so long. To think his parents would be so sadistic they would wish equine life on their son, not finding his worth in anything else!

“NOOOEEEEIIIIGGGHHHH!” Liam tried to call out, but his neck was thickening, and his vocal cords were likely robbed of their human ability. The disparity between the size of his human head and horse body was soon to be rectified, neck thickening between them and quickly swelling with meat and muscle. Worse was the powerful itching of coarse horse hairs tearing from the line below his human hair, tickling the side of his neck that formed his soon-to-be mane. 

By this point, all of Liam’s remaining humanity was his face, equine nose, and ears sat atop his primate visage. But the dull ache of his jaw stretching out did not go unnoticed as his muzzle grew and teeth expanded to take up the remaining space at the front. Horsey dentures made a goofy appearance before his lips stretched out around them, muscles writhing under the skin as more mass made up his muzzle. The force of it, skull sloping into his jaw to better provide muscle attachment support, prompted his eyes to move apart, and Liam panicked, not able to see the way he was used to. By the time they were done, Liam could really only see right in front of him, and the colors of the world were all washed out, greens and reds of the grass and building largely absent. 

His mother was there, rubbing his flanks and giving Liam a strange sense of calm through the panic that he was fully an animal. “There there, girl, it’s OK! It will be OK! You aren’t going to be a mare forever. We can change you back, but we won’t. Not until you’ve done something useful for the farm. You’re not suited to helping the farm hands, and you don’t have the skills to make us money. You need to support your family, and once you’ve done so, you can resume your life, and we’ll sit down and figure out what to do next.”

Liam was all ears at that. He didn’t want to be an animal for even a second longer, but at least it wouldn’t be permanent, right? All he had to do was…what? They already had horses. Stallions. And if was to be the broodmare, did that mean…?

“You’ll need to be a horse for a year or so, enough time to get you pregnant and ween your foal. It seems like a long time, but I’m sure it pass quickly enough! Just long enough to get some use out of you, eh, girl?” His father said, passing Liam a sugar cube. Liam felt he should be disgusted, but a growing equine part of his mind took the offering readily, allowing himself to relax enough to hear his father’s words. 

“Let’s get you into your own stall, girl! You can wait here for the night and get used to your body. With the stallions so close to you, girl, you’re going to beg them to mate you by the time you’re done!” Liam’s father said, and with that, Liam was prompted to enter the stall, some stunted equine instinct to be guided and controlled at the forefront of his being. And besides, there was no point being outside, right? Where else did he have to go? Only his parents could make him human again, even though they had no intention of doing so for a year. An entire year as an animal, a pregnant one, no less, was unfathomable. And yet…the heat he was in knew no bounds, and anything to alleviate it would certainly be welcome! 

With that, Liam was placed into one of the adjacent stalls to stew in his own juices, so to speak. Being a horse stuck in a stall, with barely enough room to walk around was torture. All there was to eat was hay, to drink dirty water, and nothing to pass the time. Worse was the heat that burned into his loins, their damp juices making sleep almost impossible. The stallions, too, seemed to respond to his scent, snorting and stomping and wandering impatiently in their own stalls. Liam had a thought. Were the stallions human once, too? How easy was it to change someone from human to horse?! Had his parents done it before? Such thoughts made sleep more impossible than it already was. 

Waking up in the morning was even more deplorable, the stench of manure burning into his nose from his stable mates. Worse was the need to relieve himself that came uncontrolled, bowels and bladder emptying without any ability to stop them, leaving him to stand in his own waste. It would be his reality for the next year if he was to remain a horse! And, that was only if he allowed the stallions to breed him, to take horse cock inside of him…

All the while, the scents of stallions were burned into his nostrils, fully awake now and stomping and snorting their lusts. It was all he could do to pull the latch of his door and go in of his own violation. He found he could not operate it, the door clearly designed for horses that had human intelligence, lending clearance to the fact his family’s stallions had once been something more. Perhaps former employees had been offered an equine life? Liam could hardly ask in his current state. And hardly cared with the ache in his cunt lips that screamed for a horse’s cock to quell them.

The sound of his parents approaching filled Liam with an equal sense of dread and anticipation. His new tail was swishing eagerly over his anus and vaginal lips, which themselves were winking in and out. The stench of his heat burned into his nose, and he was sure the stallions would be just as interested. At least, he hoped. Yet, how could he!? His body was literally betraying him, and there was no choice but to give his parents exactly what they wanted. Besides, it was the only way to return to his humanity, right? So, that being said, he had to, whether he wanted to or not…and, even if the scales were increasingly moving in the other direction…

“That a girl! See, you’re getting into the spirit!” His father said, slapping him on the ass. “They’ll be gentle, and you’re ready for it. The serum works to make sure of that!”

Liam wanted to stomp his frustrations at being treated like a simple broodmare, but there was little to be done for it with his need. So instead, he stood there, swishing his tail and waiting for the first of his suitors with a mixture of trepidation and excitement. So much landed on his first experience from the other side. Having not had sex with another, it was a frightening endeavor to have it taken in this way. But at the moment, he needed it so badly!

The sound of his mom opening the stall door made him look back, the stallion almost trampling her in his excitement to get to Liam. A trained beast, he waited until he was guided to her rump, sniffing at her offering as Liam shivered in excitement. It was all Liam could do not to whinny to beg his desperation! 

“That’s it, honey, just let your body tell you what to do,” his mom said, perhaps the kindest she had been to him in years. Liam was all instinct, backing up to take the stallion inside of him and needing to have that itch quelled. He couldn’t imagine needing anything more!

The sensation of the stallion’s breath on his nethers made Liam relax, and without realizing it, his cunt let loose with a stream of urine. Not to be deterred, the stallion whickered, stepping back and preparing to mount. Liam braced himself, not sure what it would feel like but thankful he was at least the same size as the stallion and likely able to take his weight. He was soon to find out, the horse raising up and planting his hooves on Liam’s now massive flanks. He was gigantic, yet just as big as he needed to be for Liam’s sake!

The moment the stallion penetrated his folds was the moment his mind whited out into the mare he was, taking horse cock as though he was made for it. It was hard to rationalize with equine instincts, save for the pleasant pounding against his cervix and his entire body rocking back and forth from the force of it. The weight of the beast on his back was hardly a burden with how strong Liam was, and he allowed the beast to rest on him, thrusting the two of them together in a beastly dance. With the force of the cock throbbing inside him, Liam was sure he could feel the horse’s heartbeat, their bodies in sync as the stallion took his pleasure from him.

Long before the stallion reached his end, Liam felt his feminine sex start to spasm, filling him with a shock of what had to be an orgasm. It was more than he could bare to the point of whiting out, less than the pleasure itself but rather the sense of fulfillment it seemed to provide. It was as though the delight was a reward for a higher purpose, one the equine instincts could hardly understand, but one his human awareness was sure was insemination. The infusion of stallion cream into his vagina all but solidified those feelings of purpose, leaving Liam powerfully confused and fulfilled in equal measure. He was still so stunned as the stallion dismounted that even being nipped on the neck didn’t sway him from his trance. 

Lost in the sensations of semen still dripping from his horse cunt, Liam hardly noticed his father’s hand on the back of his neck, stroking his mane and sending a pleasant tingle through his head. “There, there, that wasn’t so bad, now, was it? You just need to let the stallions do their thing, and once you’re pregnant, bring a foal to term. In about a year or so, once they’re weened, then you can change back. Hell, we might even let you try college again! Helping the farm, and giving back to your family? What kind of good son could say no to that?” His father finished, patting Liam on the ass as he went to let out another one of the horses. 

Yet, Liam was barely listening, more interested in the semen leaking from his cunt lips and the orgasmic tremors playing through his body. He had no idea if horses usually felt such an explosion of release after sex, but a growing part of him was eager to find out. Though the human part of him didn’t want to be pregnant, didn’t want to be a mare, there was no denying the sheer ecstasy he had felt from the act, or that he wanted it again, and as many times as it took to get his final release. It seemed to surprise both of his parents when Liam hitched his tail, winking his cunt lips in invitation as the next stallion flared his nostrils at her scent…

******

More than a year had passed by since that day Liam was turned into a mare. Falling into the instincts of a horse and the easier life was something she did willingly. Even the smells and sensations of equine life she once found deplorable were tolerated within those first few weeks of living as a mare. Her mind started to go rather quickly to the herd and the stallions that welcomed her eagerly, so many times in those first few weeks that her gender identity swapped to match the mare she had become. And, as a sexy mare in heat, she was eager to take the stallions as many times as they were able, which was ample times between the three of them! Yet, she loved it more than she imagined any sex as a human could grant her!

After that, life settled into a familiar routine of grazing, swishing away flies, and staying close to the stallions, part of her new herd. Though it was simplistic in nature, she was easily able to fall into the routine, allowing herself to get into the mind of the mare and being an animal. Besides, there were enough interactions with the humans to keep her mind entertained, as much as her work did as part of her stint as a horse. She was even frequently given sugar cubes and beer, something she found preferences for beyond even human tastes!

Several weeks ago, however, one new thing came into her life, giving her needed relief from the swelling in her udders. Her daughter, a healthy colt hungry for milk, and excited to explore her new world and her place within it. Giving birth was surprisingly easy, and the relief of having the life birthed from her, her weight no longer bearing down on Liam directly, was welcome, to say the least!

Though she usually ignored the specific words of the humans that tended to her, the two who she barely recalled as her human parents came to her one day, and with some focus was able to understand what they were trying to articulate. It was almost time for her to return to her past life, that one she had before…was there anything before the time she was a mare with her herd? Did any of that matter?

Recalling the consequences of drinking such a thing, Liam, sniffing the pungent brew brought to her to revert her, lifted her head and spilled it on the ground, making sure that such would never touch her equine lips. That seemed to send the message to the humans, once her parents but now only her caretakers, that she was happy with this life, this body. Especially since she was getting close to weening her foal, after which she would enter heat again, enticing her stallions once more…