As George and the old man led the way toward he stables, Becky fell behind. She was busy looking at all of the horses in the field. While George and the old man saddled up a couple of horses, Becky noticed one horse was separate from the rest. Becky saw a farm hand nearby and asked him.
"Why is that one horse separate from the rest?" Becky asked.
"Well, that's our broodmare" Billy the farm hand replied. "She's in estrus right now and all the stallions want their turn."
While Billy was talking, Becky pulled an apple out of her pocket and held it out as the mare came near her.
"Well I have other chores to do Miss, have a nice ride." Billy said as he headed towards the office.
"Thank You" Becky said, as Billy walked off. She soon turned her attention back to the mare who was eating the apple out of her hand.
"Aren't you a beauty" Becky said. "and in heat. I wish it was that easy for me to get a man's attention." As Becky continued to pet the mare, she failed to notice the ring as it glowed. After finishing the apple, the mare walked off and Becky headed towards the stables. As she was walking she felt her sex moisten, dampening her shorts.
“Oh, no... what's happening to me?” Becky stopped as she reached the entrance to the stables. As Becky tried to figure out what was happening, she noticed a large percheron stallion just a few yards behind her, his upper lip raised, nostrils flared, and his immense organ hanging half erect beneath his belly. “Ohhhh!!!” Becky groaned feeling a powerful need for him. “I… can’t believe… I’m doing this!” Becky said as she clambered over the fence.
Dropping her running shorts, Becky was shocked to see the changes that had taken her sex. Her bushy, black brush gone, replaced by smooth black skin, and short coarse fur. When she became aroused enough, Becky could watch as her clit pulsed in and out of her lips, eager for a male. “Oh, my god!!” Becky groaned and bent over, presenting herself to the stallion.
The beast drank in her scent and Becky shivered as she felt his hot breath blow across her nether regions. The stallion cared little about the transformations taking place to what he thought was a mare, about the tiny tail swishing between her buttocks, or broadening hips, or her feet growing inside her running shoes. He simply had one thing in mind. Becky quivered as the powerful animal straddled her, feeling his warmth, the brisling of his fur against her back. “Gah!” She called out as his stiff member began its entrance. It was tight, but with surprising care, the stallion pushed into the mare-girl. As her cunt expanded, he began thrusting, making the teen scream as he plunged into her.
“OH… OH… OH… No, oh geez… OH!” Becky screamed.
Being too distracted by the happenings in her pussy, didn’t notice as her running shoes split, revealing her strained socks, containing her new hooves. The stallion whinnied loudly, as Becky's muscles gained strength, allowing her to sensually manipulate his shaft. The stallion’s load exploded into as Becky climaxed once again.
“Oh god…” She murmured as the beast pulled his softening member from her, their combined juices sliding down Becky’s now furry legs. Becky fell to the ground, exhausted. The stallion sniffed her dripping pussy and left, hoping to find fresh grass.
“Oh, god… what have I done!” Becky moaned. She reached down to her groin, wishing to wipe away the sticky slime, only to find that her body had been drastically changed.
“What the hell happened to me?!” Becky said as she sat up. Her jaw dropped as she looked at her body.
“This… this can’t be real!!! This can’t be happening!!!” Her legs were entirely those of a horse, covered in black fur, with hooves just like the animal she just fucked.
“Oh, jeez…” Becky moaned again as she felt her luxurious black tail twitch and swish behind her. To top it all off Becky found a pair of leathery mare’s teats, situated low on her abdomen, nearly between her legs. “Dear god… what do I do?"
