The Attendant, Monica smiled a little as she patted the new stud on the nose. There was no traces of the humans that the two officers had once been in either of their eyes, just the pure animal instinct of a beast. She didn't want to admit it to anyone, but she was actually envious of them.
She still remembered her first day here, she had just been a visitor at the time along with her best friend and boyfriend. The Zoo was small back then, the stalls were empty. She could remember as if it was just yesterday.
(Flashback.)
"You don't have any horses here?" Monica asked as she looked around the empty stable and back at the male attendant. She didn't even notice that her ears were now at the top of her head and becoming more and more pointed.
"Afraid not, but we should be getting some very, very soon," the attendant said with a smile as she saw the young woman exploring what would become her new home soon enough, a tail was already growing out of her rear end. She was going to make a beautiful mare. "Do you like horses?"
"I love them," Monica said with a smile. "When are they going to be here? Can I wait for them?"
"If you'd like," the attendant said with a smile as he watched her body changing, her scent was already starting to resemble a horse and her body was growing larger as brown and white patched fur was starting to grow over her body. "You're free to stay here as long as you want of course."
Monica was about to say something when she heard a loud whinny coming from nearby. She turned in shock to see her transforming boyfriend mounting her best friend who was already nearly a horse. It snapped her out of her trance as she looked down at her body, she now looked more like an anthro horse than anything else, her clothes straining before they finally tore apart, leaving her naked and she let out a terrified whinny.
"Just because I love horses doesn't mean I want to be one!" She protested. "Please turn me back, I'll do anything!"
"Anything hmm?" The attendant asked with a smile. "Would you agree to come work here and help tranform more humans into horses?"
"YES!" Monica said as she felt her breasts start to move down a little before the changes suddenly stopped, but they didn't reverse. "What are you doing?"
"You're going to be in this form forever I'm afraid," the attendant said with a smile as he patted her on the neck. "You agreed to the terms, but the transformation is irreversable. The good news though is that we can use this place's magic to hide it, you just have to do your job well."
"Okay fine..." Monica said as she looked at her reflection, she actually looked pretty hot like this, at least she looked somewhat human. "Is there anything else?"
"Well, you're no longer going to be satisfied by humans," the attendant said with a smirk. "You can't even be aroused by them, a transforming stallion is your best bet. Transforming humans will also make you more aroused."
"And, what if I changed my mind?"
"That's easy, you just need to find a willing transformee who mates with you during the transformation," he said with a laugh. "But that's unlikely to happen. So, I'd get used to this new body."
Monica gulped and looked back at her friends. She could see their human intelligence slipping away as the new stallion thrust into his mare one more time and they both whinnied as he finished and dismounted.
They were gone forever.
(End Flashback.)
Monica walked over to Harry and stroked his mane gently. He had been the same stallion that had once been her boyfriend, she kind of missed him, he had made a good stud over the years though, and she just wished she could give herself to him.
She sighed, she wanted to be a horse more than anything now, it just meant she was going to need to find someone willing to be transformed.