The New Mare (Female to Horse Transformation)

We once again return to Darryll's farm, where girls turn into farm animals.

Our friend Darryll the farmer – you’re probably familiar with him at this point. So far, two girls have visited his farm, to be turned into lovely cows for his herd.

Today, Rebecca was paying him a visit, intending to get a job in his stables – the ad she responded to said ‘working with stallions’. What wasn’t obvious, was just how closely acquainted she’d be getting.

It was a nice, sunny day when Rebecca arrived. She lived close by, opting to cycle to the farm. Darryll was happy to see the girl was wearing a dress – it would make the transformation process easier if she didn’t have to burst out of jeans.

The type of garment she’d chosen was a button up dress, which had buttons down the front from the hem to the collar – meaning they’d pop right off the moment the fabric became too tight to cover Rebecca’s new body.

Daryll would make sure to bear witness to this one.

She greeted him with a smile. “Morning, mister farmer,” she said, her red ponytail bouncing behind her as she walked up to him. “I can’t wait to see the horses!”

“Of course,” Darryll smirked. “You’re the new horse girl.

“No need to lock your bike, just leave it here. No one will be coming by to steal it, I promise.”

Rebecca did as she was told – extending the bike’s stand and following Darryll to the stables.

She’d never be able to ride a bike again in a few moments.

The sound of the horses whinnying put a spring in Rebecca’s step; they seemed as excited to meet her as she was to meet them. She followed Darryll inside the stables; there were four horses, and an empty pen.

Darryll stopped in front of the pen, opening its gate. “Alright, here we are,” he said. “Would you mind stepping inside?”

“The empty pen?” Rebecca asked. She was unfamiliar with this way of working – but then again, she’s never applied for a job at a farm before.

“Yeah,” Darryll replied, waving in the direction of the pen before walking off. “I need you to test somethin’, and this pen is perfect.

“I have a new mare arriving today, and I need this pen ready for her arrival.”

Rebecca happily skipped forward, excited at what Darryll’s words seemed to be suggesting. Was she really going to get to pamper this new darling mare as her first task?

“Oh,” she cooed, “I’m happy to help!”

“Alright,” Darryll said, “get into the pen, I’ll go get something for you. Close your eyes.”

“…Okay,” Rebecca said, not sure why she had to close her eyes – but her excitement told her that Darryll would be returning with the mare to surprise her.

She heard him walk away, his footsteps getting slightly softer. Then, the slight jingling sound of a bridle.

But… Darryll returned alone. She heard him walk up behind her and close the pen. Had he only left to get the equipment to show it to Rebecca? Was she supposed to just clean the pen before she could meet the mare? Or was she supposed to go get the mare herself with the bridle?

“Darryl?” she asked. “Wha-“

The rest of her question came out muffled as the bridle’s bit was shoved into her open mouth, and the straps of the bridle tightly strapped around her skull.

Rebecca stared in disbelief, quickly spinning on her heels.

Darryll chuckled at the sight of the girl’s anger. “Don’t worry, it’s just strapped,” he said. “Not locked. It’ll grow along with ya.”

Grow along? What on earth was this man talking about?

“It just keeps you from… screamin’.”

Screaming? That was on Rebecca’s to-do list, definitely. Right below taking this ridiculous thing off. She moved her hands up towards the horse equipment, intending to pull it off of her face in one, smooth motion, but she found her fingers unwilling to cooperate.

It was as though they had gone completely paralysed, but instead of limp, they were stiff as a board, sticking right out.

“Mmh…” Rebecca mumbled. “Nof… goof…”

“It’ll only take a minute, darling,” Darryll said, exiting the pen and closing it behind him. He proceeded to lean on the chest-height door, making sure to enjoy the show. “It’s painless, I promise.”

Rebecca had her reservations about this farmer’s promises.

Something was happening to her breasts – they were swelling, increasing in size, threatening to pop the buttons on her dress. Her suddenly large nipples were clearly visible beneath the fabric. At the same time, they seemed positioned much lower – and lowering actively down her dress. Rebecca moved her still stiff hands down to where they were, now positioned where her belly button should be – and they seemed to be lowering still, presenting as two large bulges near her crotch. Mia poked them with a stiff finger, only to notice the change in her hands had progressed, too – her fingers had merged together, and her thumb had vanished altogether – her nail beds were expanding and growing, the nail itself turning pitch black and far thicker and stronger than before.

Her hands were slowly morphing to hooves – and her breasts slowly became visible again as the hem of her dress began riding up her thighs. The nipples plopped out, one by one – one, two, three… four. Two additional small breasts, unlike their still somewhat humanoid counterparts fully pink in colour, had started growing just beneath the other pair. Their nipples were large and soft, long enough to fit into a foal’s mouth to suck on. Slowly but surely, the human shape of Rebecca’s other breasts began to match the newly grown equine udders.

The reason her dress had began riding up her thighs was the sudden increase in size of her behind. As her stance changed, actively pushing her to lean forward, a tail poked out from underneath the dress, pushing it up even further to expose her buttocks fully. The fiery red tail popped out, swishing curiously at its newfound sense of freedom. Her thighs swelled as a thin layer of stark white fur began growing, rapidly changing Rebecca’s complexion.

Her height increased as her legs morphed, her stance now forcing her fully forward – Rebecca lost her balance and fell, awkwardly leaning on her still-changing hands as they entered their final stage. The ballerinas she’d been wearing underneath her dress deformed and flattened underneath the hooves that were now growing out of them.

“Make it stop,” the pleading look in Rebecca’s eyes begged, staring up at Darryll. He seemed to be enjoying himself.

Rebecca heard the sound of her shoulder blades cracking and popping as her new skeleton formed. Her hooves had fully formed, and the bones in her arms were finally properly adjusting themselves. Soon, she found herself rising above Darryll in height, as some freak sideshow attraction – a horse with a human head.

Thankfully, not for long.

Rebecca’s final transformation had begun – but something was distracting her from the pain of her facial features morphing.

Her face stretched over the bones as they grew, her hair partially falling out as her skull changed shape. Her ears travelled upward, changing shape and texture until they were properly equine. Her old teeth dropped to the ground as new ones grew in – these would be more fit for eating carrots and apples. Some of them stayed behind, as they were unable to fall out from underneath the bit in her mouth – she’d surely swallow them whole. Her tongue grew wide and long, and briefly all she could think of was how wonderful it’d be to be able to use it on the new genitalia she was growing in between her equine legs. Drool dripped from the bit as the hormones came rushing.

A human vagina, uterus, and labia are far too small for a horse. She had much growing to do, which resulted in an overflow of estrogen for the brief moment that her change would take to occur. It felt like a rumbling, fluttery feeling in her stomach as her new vagina throbbed to increase its size, ready and fertile, eager to receive the next stallion she encountered.

Her dress had suffered quite some damage - the buttons had popped on her belly, leaving the fabric of the dress's body hanging loosely on her back like some strange, severely undersized coat, but the arms had stretched well beyond what they could handle - Rebecca's front legs squeezed inside of them, fat and muscle painfully spilling out through a handful of tears the expansion had created. Darryll would have to cut the dress to get it off of her. 

Rebecca whinnied as loudly as she could underneath the bit, which now sat comfortably in her new mouth – the straps had indeed loosened to grow along with her new skull.

“Good girl,” Darryll said, patting the new, stark white mare on her nose. “See? I told you it was painless…”

He smirked. He hadn’t lied that a new mare would be arriving, and he hadn’t lied that he needed Rebecca to test the new transformation horse gear he’d purchased.

It didn’t matter – she hardly remembered being a human at this point, anyway.

Darryll turned around, looking at the other horses. It was time for him to find a stallion to make his girls proud mothers.

He’d become known as the best horse breeder in town.