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Dr. Haywood sighed and twitched his whiskers as he considered the file of Michael Harvey on the desk before him. The roan bull was almost 33, of average size (not skinny but not muscular either), homosexual and in a relationship, but so deep in the closet because of terribly conservative and pushy grandparents that he could barely acknowledge it. This had made the relationship between himself and Craig Jordon (age 35), his draft horse boyfriend, extremely rocky as Mike was unable to commit himself to it fully. While there had been no actual abuse from Mike towards Craig, Craig's testimony in the report showed that they had come close on several occasions. And while his parents had been more accepting of Craig, they had to hide their relationship from Mike's grandparents- but now, their recent passing had left Mike with a fairly sizable sum of money. Which he was now planning to use to "fix" himself- and improve his relationship with Craig.

The fox rubbed his nose as his whiskers twitched, a sign of his seriousness.

"You are aware of the extent of the procedures that you and Mr. Jordon are proposing?" the fox asked, working very hard to keep any note of judgment out of his tone.

"Yes," Mike replied. The bull seemed slightly nervous, most likely an artifact of the ongoing conflict between his grandparents "traditional" upbringing and the reality of his homosexuality.

"Memory modification, personality changes, as well as genital modifications. These are quite extensive changes to make."

"I know. But I want to do them..." the bull looked down at his hooves. "For Craig."

"Are you completely sure? The hypnosis in particular will require your full commitment to properly take, and the body modifications will be... expensive to undo. Your inheritance or insurance may not cover them being undone."

"I am," Mike replied after a long moment of silence, but now his voice was infinitely more confident than it had been before.

"Very good," Dr. Haywood said as he tapped the papers of his patients' files against the table before placing them in the folder and placing it under his arm. "We will need to take some measurements, and a brief physical exam before we begin the actual procedure."

With the exam completed, the fox led Mike (dressed only in his boxers) to another room that was bare of everything except for a large beanbag with a small steel table next to it. Dr. Haywood directed Mike to take a seat in the beanbag, which the bull discovered to be filled with some sort of fluid that made the seat feel comfortably warm. He leaned back and made himself comfortable, relaxing for a moment before taking in what was on the table. In addition to what he recognized as the sensors of a heart rate monitor, there were four large syringes- each filled with a different colored liquid. One was filled with a gold liquid, another with a clear blue fluid, another with a cream colored liquid, and the last with a deep red fluid.

"For your privacy Mr. Harvey, the process is monitored only by heart rate monitor. No one will be visibly monitoring." Dr. Haywood explained in the standard clinic procedure introduction. "The first part of the treatment is designed to put you into a relaxed state, so your heart rate will only increase if something goes wrong." He finished attaching the monitor sensors, and held Mike's wrist to check his pulse. "Everything seems normal. If you are quite ready, we can begin the procedure."

Mike nodded, and looked forward at the TV mounted on the wall in front of him as the doctor rubbed an alcohol swab on his shoulder.

"You'll feel a couple of pinches, and a pleasant warming sensation. Once I leave, the visual part of the procedure will begin."

The bull nodded, and did indeed feel a pinch, followed by a warm feeling that rapidly spread through him, relaxing him enough that he barely felt the second injection that made him feel a bit numb- so much so that he didn't feel the other two injections.

"Enjoy Mr. Harvey," a voice said into the rapidly spreading haze that overtook his brain. Then he heard a click as he enjoyed the sense of floating. Then the TV screen came on in front of him and began to project a swirl pattern, and the bull- left open by the chemicals flooding through him, couldn't help but stare into it. Mike chuckled. It was just like in those awful movies Craig liked...

But unlike the movies, the spiral was... fascinating. Mike couldn't take his eyes off it- and the more he watched, the less he wanted to. It was so easy to just fall into it. Just relax. And watch. Watch the spiral.

His eyes grew heavy and he watched the spiral with his eyes half closed. His body sunk into the liquid filled beanbag and his numbed arms and legs slowly spread out to cover the whole chair. A feeling of warmth and contentment spread through him.

It was relaxing to watch the spiral, to just watch it spin and not think about anything, to just float as his heavy thoughts drained away. He could feel his mind emptying as the voice told him to do, to just relax and feel his thoughts vanishing. He floated in a cloud of bliss, happy and unaware of his shaft beginning to slip from his sheath. The bull just floated on the beanbag, his mind empty except for the unknown voice in his mind.

At the voice's command, new thoughts began to form in the blank canvas of his mind: images of male horses. The images met with little resistance- he was dating a stallion after all, and the images where all of horses in Craig's colors. Slowly the images moved from random horses with iron grey coats, to larger horses with iron grey coats- big, powerful draft horses like Craig. Ardennes... yes that was the breed... They were so handsome with their big barrel chests, dark grey manes, and well-muscled legs. Every now and again he saw images of a roan bull with a white chin being hugged by a grey stallion- in its current state, Mike's mind didn't recognize the rare pictures he had taken with his boyfriend, but the idea that this was right permeated his mind. There was some resistance, but it quickly faded under the barrage of images and commands from the voice. There was no reason that a bull and a stallion should not be together if they both desired it. There was no reason why a male should be ashamed of being attracted to other males. It was perfectly natural for two males to find each other attractive. Bulls could like stallions. He should not be ashamed of his stud. He should not be ashamed of wanting to be bred by a stud like Craig.

The images slowly began to become more sexual in nature, as clothing was removed until the Craig like horses were wearing only thongs or jockstraps and posed to show off their enticing bulges. Mike's shaft hardened further at the thought, and a desire to know fully what was under those thin layers of fabric. A wet spot of pre began to soak his tented boxers. He moaned aloud.

"Ohhh... Craig..."

***

In an adjacent room, Dr. Haywood monitored his patient. From the control room here, the fox could see the bull's heart rate and control the images that flickered on the TV monitor (minus the induction aiding spiral, of course). In addition, he could hear what was going on in the transformation room. While it was true that no one could see what was going on in the transformation room, all an experienced clinic doctor like Haywood need was the heart rate monitor and the audio to tell how the transformation was going.

This particular transformation was one of the more unusual procedures that the fox could recall. The first step had been to overcome the cognitive dissonance created by Mike's grandparents' views, and what reality actually was with him. Even though the fox was happily married to a vixen, he was still bisexual enough to have a bit of a tent in his scrubs as he watched the pictures of Ardennes draft horses go from merely suggestive to downright pornographic as the homophobia forced on the bull by his insensitive grandparents was broken down. The moaning of his boyfriend's name signaled to the fox that it was time to move on to the second stage of the transformation.

The second stage was where things got interesting, and moved outside of the transformations that Dr. Haywood had experienced before. The Harvey family was old money- which probably went a long way towards homosexuality and their forcing (at least Mike's grandparents, his parents seemed infinitely more open minded though, like Mike, unwilling to go up against the older generation of cows) of those views onto a young bull that was struggling with his own sexual identity. With Mike's grandfather's passing the year previous, the now older bull had the freedom and the means to explore who he really was. This investigation (which had brought the couple to the clinic) had turned up some interesting aspects of Mike's identity- which in turn led to some of the more surprising aspects of the transformation being the bull's ideas.

Their first stop had been to a therapist that specialized in LBGT issues. After a few months of talking to the therapist, Craig and Mike had come to learn a few things about their particular issues. Craig had been out since his teenage years, and had always been a switch- but Mike, it turned out, was a bottom. Of course, the self-image forced on him by his family would not allow for this and in the couple's few actual sexual encounters had left everyone unsatisfied- as Mike had often turned to abusive language to cover his own lack of satisfaction. But even this new found self-awareness couldn't overcome twenty-eight years of conditioning, a fact that had brought the couple to the clinic today.

Dr. Haywood smiled to himself as he loaded the sound files that would start the second phase of Mike Harvey's transformation into his ideal self. It was always a joy to help others become who they wanted to be.

***

It was natural for a bull like him to be with a stud of a horse like Craig, the voice that was Mike's only thought told him. They were so sexy after all. The images where now of nude horses, many with absolutely perfect erections while others held roan colored bulls which were as nude as they were. Mike moaned aloud in the desire to be the bull in those images: to be held and cared for by a big, powerful, caring horse like Craig. The conditioning that had been forced on him since was a child began to completely break down, and his already erect cock throbbed in desire to feel a thick horse shaft rubbing against his rear before it was loving slid into his waiting tail hole. Mike's tail flicked in desire of this perfect situation.

Unknown to Mike, his balls had begun to swell, becoming larger than even the largest bulls'. As the images became more and more arousing, as the bulls bent over and where lovingly bred by the horses, his balls swelled to the size of softballs. The bull's heavy nuts sunk into the warm fluid of the beanbag, arousing the bull even further as he imagined them being pressed against Craig's balls. Mike's boxers gave way, popping as they could not contain Mike's heavy balls and throbbing, leaking erection- as well as another modification: the bull's muscles were growing as well (as where his horns- making him a true longhorn), and his now extremely well-muscled thighs had burst the seams of his boxers. His chest had also expanded as well, to a set of pectorals that any body builder would be proud of. This was what horses wanted: big muscular bulls to cuddle and plant their seed in. It was so hot to be a muscular, subby, bottom of a bull.

But first there was something he needed to do before he could become that perfect bottom sub. He pushed himself up with his newly muscular arms and got up to his hooves, though he was a little wobbly in the trance. He took two unsteady steps towards the TV screen, then stopped as he was ordered to by the voice in his mind. His still enlarging balls slapped against his thighs, their production kick into high gear by the chemicals- they were almost sloshing with seed as the bull walked. His erect shaft was beginning to seem small with the massive orbs hanging under it, even as it dripped a constant stream of pre. Just in front of him, a tile on the floor and what looked like a silicone horse rear on a stand emerged. Due to the measurements taken before the procedure started, the rump stopped at the exact level of his cock. Mike moaned as he stepped up and slid his cock into the orifice. This wasn't his favorite position, but to become who he wanted to be it was necessary. He began thrusting into the rump, now attached to a willing Craig, just wanting to unload his seed as quickly as possible to become the bottom bull he desperately wanted to be. He needed to empty his swollen balls. He needed to cum. To become a bottom, he first needed to give up his seed.

Mike moaned and gave one last thrust as a powerful orgasm gripped him. The entranced bull's knees went weak, and he leaned on the silicone rump as the orgasm continued unabated. His cock throbbed and spurted more and more semen into the collector for a full minute before his hyper producing testicles were finally spent. Mike flopped back on to the warm beanbag with a contented sigh. Now he could be the bottom he had so desired to be- now he could be a good bull for his stud.

The sperm collection rump retreated into the floor, and the induction spiral returned to the TV and relaxed Mike. For some time, the bull just relaxed like he was told, listening to the new thoughts in his mind. He was a good bull. He was a bottom. He loved his horse. He was a good bull. He loved to have his horse put his big flared shaft in his waiting tail hole. He was a good bull. Other new ideas flooded through his mind: he loved to pretend to be his horse's pet bull and do anything his stud of a master wanted him to do; he loved to nuzzle his stud's big, full, musky balls and his bull pleasing mottled shaft; he loved to be Craig's mare... The voice continued, giving Mike more thoughts, telling him how to be a perfect bull for Craig. He listened intently, even if they did register to his conscious mind- he just floated on the beanbag.

As the voice continued the fluid in the beanbag shifted in a wave, and flipped the bull's enlarged scrotum up on to his torso so that it covered his pelvis- including his sheath. Taken together, his balls had reached the size of a basketball, a basketball that now protruded directly from his crotch. The bull moaned as a warm sensation flooded through his crotch and aroused him again, in spite of just having the longest orgasm of his life. But he did not get erect. He couldn't in the traditional sense any more- his scrotum had fused to his pelvis and his sheath (and its contents) was gone- absorbed into his rapidly changing anatomy. Inside his scrotum he now only had one giant testicle now, in addition to other, less obvious changes taking place inside his abdomen.

With his scrotum now attached to the front of his pelvis and out of the way, Mike's tail hole was exposed for the next part of the procedure. At the edge of the beanbag, the floor opened up and a mechanical arm with a dildo the size of a pencil rose up between the bull's bulging legs. Guided by a laser sensor and the measurements from the exam, the arm brought its dildo against his tail hole. It hovered there for a moment as it lubricated itself before gently sliding into the willing bull's eager hole. It worked its way in to his welcoming depths and as it pushed deeper it began to inflate, slowly growing longer and thicker to slowly stretch Mike's virgin tail hole to accommodate to his boyfriend's large, thick, flared shaft. The bull moaned in pleasure as his insides were stimulated.

At first, the dildo just worked the bull's insides, gently taking the shape of a horse shaft-including the flared end. It slid back and forth, getting Mike used to having a proper stud's tool inside him like he was meant to have. Mike moaned loudly. Once he had been properly stretched, the dildo began to specifically massage his prostate. The dildo began to vibrate against the bull's prostate, working in a series of chemicals that enlarged the organ and made in much more sensitive so that an orgasm could easily be achieved through prostate stimulation alone. After all, Mike had never been like other guys... He didn't have erections...

From the bull's massive scrotum, four little nubs had appeared. Slowly, they grew to roughly four inches in length, so that now the bull was the proud owner of a set of udder. Of course he was. He had always had them. Craig loved them. He'd been made fun of by the assholes on the sports teams back in school that had found out about them (stupid jocks), but not Craig. His big stud had been so quick to accept them when he'd found out about them... And it turned out that Craig had a thing for boy udder. Mike moaned and squirmed as memories took hold of Craig nuzzling, fondling, and suckling his bull's udder; telling his bull how lucky he was to have more than one dick to be played with; and making Mike cum out of each dick-teat before play times were finished.

The transformation was complete, and Mike stood allowing the Craig dildo to thrust deep into him one last time. Mike groaned in ecstasy as he felt his insides swell for just a moment at the dildo seemed to release a massive load into his insides. After a moment, the swelling reduced and the dildo contracted and slid out of the bull's tail hole and back into the floor. He removed the heart rate monitor as the voice in his head instructed him to, but remained looking at the TV as one last fetish was implanted deep in his mind- the desire, when the time came, to be a good mare now that he could be...

Dr. Haywood, alerted by his patient's removal of his heart rate monitor, padded back into the room carrying a device that looked similar to those used to milk feral cows. He looked over his patient with a practiced eye. Where before Mike Harvey had been an average sized bull with smallish horns, little muscle definition, and a nice (if average sized for a bull) sheath and balls; now he was a tall, powerfully muscled longhorn with a basketball sized udder. While the patient was still in his trance, the fox quickly took measurements of the bull's new waist size (which had enlarged a bit to accommodate his new anatomy), and the size of his udder. He inputted these into his tablet, and sent them to the clinic's in house tailoring center- a basic need in a medical center that specialized in body transformations. That done, Dr. Haywood quickly hooked up the milking device to a tube that emerged from the floor (the same one that had collected Mike's last traditional orgasm two hours before) and then attached the other ends to the bull's udder. The fox chuckled at his patient's moans of pleasure at this, and the last dick-teat was leaking a great deal of pre as the fox inserted it into the milker.

"Alright Mr. Harvey, I am going to need you to lean on to the table so that I can examine the internal changes," the fox said as he slid on an elbow length examination glove. "I'm also going to turn on the machine attached to your udder. The chemicals used in the procedure evacuate through orgasm, so that will get them out of your system. You'll be so worn out from this, that you'll fall asleep for two hours. When you wake up, everything will be normal to you. You have always been as you are now. You came here today for a physical, to check your health for that last little fetish of yours..."

***

Craig Jordon looked up from his magazine as the clinic door opened. He hadn't been in the waiting room the entire time- he had also gone through the clinic, as the muscles distending his shirt and the pronounced bulge in his jeans could attest. But his procedure had been much less intense than Mike's, and so he had been sitting in the waiting room for several hours. But now, Mike emerged guided by the swift fox doctor that had talked to them all those hours ago.

Craig's heart melted as he saw the massive smile spread across Mike's face when the bull saw him and the big draft horse barely had time to get to his hooves before the bull had dashed across the waiting room and threw himself around Craig's neck in a big hug. That was when Craig fully grasped how successful the procedure had been- not only was Mike being affectionate towards him in public (something the bull had never done before), but he could feel the bull's new udder pressing against his own newly enlarged equipment. Mike kissed him on the cheek and giggled as he felt Craig's sheath swelling against him.

"Hey baby," the bull said into Craig's ear as his tail swished happily behind him. "Seems you missed me."

"Always," Craig replied, pausing for a moment to remember what the doctor had told him as far as what Mike would think they were here for. "How did your checkup go?"

"Everything went just fine," the fox doctor replied with a smile. "Mike is perfectly healthy."

"All good for my stud," Mike agreed with a wink.

"Then... I guess this is as good a time as any," Craig said and dropped to one knee and pulled a small box out of his pocket and opened it. "Mike Harvey... will you marry me?"

"In the middle of a doctor's waiting room after a routine check-up?" Mike asked with a raised eyebrow and a smirk. "You are such a romantic, love. But you know I'll say yes."

"I know..." Craig said with a sigh that he hoped would come across as false annoyance rather than deep relief. Behind them, the fox doctor smiled broadly before silently excusing himself. He slid the ring on to Mike's finger. "But after the discussions we've been having, and why we came for this check-up... I just thought it was a good time."

Mike looked at the plain looking gold band before he smiled and pulled Craig to his hooves and locking his muzzle on the horse's in a deep passionate kiss.

"Well, it only took you seven years to come up with a good time to ask..."

***

10 months later

It was on a lazy Saturday afternoon that Craig decided it was time. Aside from the usual debates that every couple had and worked out while planning a wedding, their relationship had become ideal. Mike had become the model of a loving boyfriend, and Craig had taken it upon himself to be the best boyfriend he could be. Compared to how their rocky their relationship had been before the clinic, this was heaven.

Mike was wearing his collar- which meant that he was in his "pet" mode. According to their rules about this, when he wore his collar Craig could request anything of him and Mike would have to do it without question (unless it made him feel uncomfortable of course- but Craig was very, very careful to not push the bull too far outside his comfort zone). "Pet time" was also a private affair- only for the two of them- if they company, or went out, Mike could not wear his collar. In addition, Mike was to wear as little clothing as possible- no more than his custom made jockstrap to cover his udder. And so the collar and the jock where all Mike was wearing as Craig listened to him do the dishes. The big draft horse wasn't wearing much more as he lounged on the couch in just his boxers while his dark grey mane dried from a recent shower. Craig had to admit that he was in the mood. And more than that, he had been thinking about the last change that Mike had requested from the clinic.

"Hey Mike," the draft horse called. "The dishes can wait. Come on out here."

Mike arrived quickly, and without a word. Craig looked his handsome, muscular bull up and down- the black of the color and his jock contrasting wonderfully with his roan hide. The jock had been custom made for Mike, and while it did the job of covering and holding his udder in place, it left little to the imagination- Craig could clearly see the four little bumps of his bull's dicks. The horse was so in love with his fiancé, and he began to get aroused. He stood up, moved walked across the room, and threw his arms around his bull and kissed him. Craig's sheath began to swell as his junk rubbed against his fiancé's udder. Mike squirmed a little and moaned into the kiss as he began to get aroused as well. Craig broke the kiss and nuzzled the bull's nose.

"How'd my baby like to be a good mare? Would he like me to breed him?"

Mike gasped as the term settled into his brain and set off the triggers that had been implanted there. His tail smacked across Craig's powerful thigh even as the horse's own tail swished behind him. Craig moved behind his bull to rub his crotch against his soon to be husband's perfect bubble butt. Mike felt a warm wetness spreading over his exposed rear, and a similar wetness beginning to spread through his own jock. His mind desperately wanted to do what Craig wanted, but part of his mind had concerns.

"But... but the wedding is next week baby..." Mike stammered, even as his body responded to his unconscious desires and was bending over for Craig.

"It's okay sweetie," Craig whispered into Mike's ear as he rubbed his bull's muscular stomach. "You won't be showing before the wedding... There's plenty of time for you to be a good mare."

Mike groaned in pleasure, rubbing his rear against Craig's stiffening cock. He wanted to do this so badly (and technically, by the rules of the game he should have a horse cock inside him already). At a subconscious level, he knew that if someone said the phrase "good mare" one more time he would have no choice... not that he wanted one.

"Yes master," he moaned. "Please... Please. I want to be a good mare..."

That was all Craig needed to hear. He dropped his boxers, to reveal his large mottled shaft, already half erect. It continued to get harder as he began to rub it between Mike's exposed cheeks. At the same time the horse slid his hand into the bull's jock, rubbing his udder as he nibbled on Mike's ear.

"Mmmm... is my mare ready for me?"

"Of cooourse..." Mike moaned. He always prepared himself when he put his collar on.

Craig reached both his hands down to the bull's waist and dropped his jockstrap to the floor. Mark's already leaking udder was now exposed for Craig to rub as he guided the bull to the couch and settled him on his back upon it. Craig's tail swished across the carpet as he knelt down and nuzzled Mike's udder, enjoying the feeling of his dick teats rubbing against his face, inhaling his love's musk into his broad nose, and enjoying the little gasps and moans that his actions elicited. He began to lick his fiancé's udder, paying close attention to his dicks, before he took the lower two into his muzzle and began to suck on them. Mike moaned and his tail slapped against Craig's barrel chest- the bull was attempting to speak, but most of the words were broken up moans of pleasure. As he sucked his bull's dicks, Craig ran a thick finger along the underside of Mike's udder, down his taint, and gently into his tail hole- which changed the moans to a gasp for a moment. Another finger followed and Craig rotated them around the warm clingy confines of his lover's tail hole, preparing him for his thick tool.

Mike was in ecstasy. Craig always knew how best to please his bull- to the point that Mike was getting slightly worried that he would cum even before Craig had gotten started. It wasn't the biggest concern for someone who could manage four orgasms in a row... but Craig did love a good cum bath... Mike was just about to warn his stud that he should ease up- but as he prepared to do so the warm, wet feel of his lover's muzzle disappeared from his udder and Craig's fingers withdrew from his tail hole. He giggled as he was lifted up by his hips and repositioned so that he was lying along the couch. Craig climbed up onto his chest to reach into the drawer of the end table- a position that left a fully erect stallion cock dangling right in front of Mike's nose. The bull took full advantage of this fact, taking in as much of his stud's tool as he could and sucking it happily while Craig continued to rummage around in the drawer. But all too soon the musky, leaking rod was pulled back from his whimpering muzzle as Craig located the lube and pushed himself off of Mike's chest.

A moment later, the stallion lifted Mike's hips into the air, and Mike gasped again as Craig's fingers returned to the inside of his tail hole- this time coated in thick, cool lube. Then the fingers withdrew and Craig leaned down to nuzzle and kiss Mike's udder as he lubed up his ten inches of stallion rod. That task accomplished, Craig placed his tip up against Mike's tail hole and inquired if the bull was ready. When the answer came back in the affirmative, Craig thrust deep into the bull's warm depths. Both males moaned and gasped as they mated: Craig from the bull's warm, tight insides pressing against his shaft; Mike from the thick shaft filling and stretching him. The bull's udder was covered in the steady spurts of pre that sprayed from his dick-teats with every one of the stallion's thrusts. Craig's paced picked up and Mike groaned as the stallion filled him and brought him closer and closer to orgasm. He could feel the stallion's shaft fully flare- a sign that he was getting close, and stroking the bull's prostate even more. Mike groaned as the pressure beginning to build inside him, his orgasm building and building.

"You... readddddy... to bbbeeee aaaa good mare?" Craig moaned between grunts of exertion.

"Yeeesssssss," Mike moaned in reply.

With that, Craig gave a final thrust and neighed loudly as he dumped his load deep into his bull. The new pressure was enough to send Mike over the edge, and he came from all of his teats at once, spraying liberal streams of bull seed over both himself and Craig. Fully spent, Craig flopped onto of Mike and the two kissed passionately before dozing in each other's arms.

Six months later, Craig knelt in front of his husband sitting on that same couch and gently pressed his broad nose against Mike's swollen belly. He almost could imagine that he felt one of the tiny lives growing inside the bull pushing back. Craig smiled and rested his head on his husband's stomach and looked up at him to find Mike smiling down at him with contentment and pride. Craig had to admit to himself that his husband had never looked more beautiful than he did at that moment.

Before their visit to the clinic, this had been one of the main arguments they had had- that as a couple, they would never have children- something that Mike's family with their old money were very keen on (some of Mike's inheritance was based on producing children). But when they had discovered the clinic that ceased to be an issue- they could have kids on their own, and Mike was more than willing to carry them. Craig smiled broadly, kissed the belly that held his children, and moved his muzzle down further to take Mike's teats into his mouth.