Scott found himself being strapped to a large bed made of soft form fitting polyfoam. It was warm but somewhat dampish to his naked skin as he wiggled into the most comfortable position.
"Excellent Scott, excellent your coming volunteer experiment was quickly decided as a customer has paid our retainer. You my friend shall become a prime Euopean Bison Bull. The Amsterdam Zoo has offered a fine sum to get a fuctional sire to increase the Zoo's herd. It seems their last bull died at the age of thirtytwo last Sunday. The poor creature was not able to mount any of the cows this past year. So by the time you arrive those cows will be horny as all hell! The Zoo has a breeding farm located in a country setting and that is where you shall reside. The calves and some of the cows are kept in the Zoo proper, but you and the breeding stock are on a fine country farm. I'm sure you will like it there, no worry of you telling anybody as to who you were, they don't speak a word of English, oh but niether will you!" laughing the doctor prepared another syringe.
Scott's eyes grew wide open as the syringe was poked into the base of his penis. The pain of the needle was covered quickly by a pain as if his penis and testicles were on fire.
The doctor saw his whencing of pain and offered little for comfort. "Take it easy Scott the enzime formula must begin it's refinement where your body reproduces. A little pain is to be expected since your entire form will be fighting the enzimes. I expect to hear you scream a lot during the next six weeks. Most of the volunteers scream as they witness the change eeking away their human selves'. You I expect will be one of the worst as your body will not only change from human to brute beast but, you unlike the others will retain you mental ability. I decided to leave your mind alert during the change just so you can enjoy the wonder and understand my fun!"
As the pain grew more and more intense Scott watched his penis go from erect to just plain ready to bust.
As the doctor came back inside the room he had with him a pretty blonde woman. "Scott she is here to aid your beginning changes. She is also a volunteer and has been in process of becoming a Palamino mare. Her mind is rather clouded by the enzimes so don't try to talk to her she can't answer, just whinnie!"
As Scott lay wiggling from pain and erect like a post the girl bent her head down and mouthing his shaft began to suck. Now the sensual touching produced a more wrought feeling of beastial desire. Scott wanted in the deepest way to reach out and touch her but he was still strapped down tight.
The doctor chuckled as he witnessed the arching of Scott's back with each sucking draw the girl made on his erect penis. "She will do this once every hour, day and night for the next two days. Her reward was to be left with the memories of her family since she was purchased unknowingly by her Father as a Palamino breeding mare. I laugh just to think of his days ahaed as he thinks his daughter to be missing or dead, but instead she is living in his stable as a mare. I wonder just what he might think or do to himself if he found out that he put his daughter in front of those stallions. Think, if you can, what she will think as the stud's shaft presses back the lips of her horsey vulva and plunges deep into her with his twenty inch long cock. Imagine, the agony her female human mind will realise as she is used as breeding stock on her Father's farm. Just think, once she rode the stallions about the ring and won blue ribbons. Soon she will be judged by the foals she produces and the number of times her body was mounted by brute stallions, think!" explained the doctor showing a tenting in his pants.
Scott moaned as another increased load surged from his erect penis into the girl's mouth. As another erection began to build it's new load a thought spread over Scott's mind. "The doc says I'm going to be a bison bull of substance, graced to be constantly at stud! The feeling of being at stud on cows does not thrill me like this girl does! Yet being a prime stud has it's possibilities but then too I'll lose all independance and be a thing of property!"