Bounding through the forest, Jim, who looked to all the world like a perfectly normal deer, became aware of another animal nearby. He slowed and began to move cautiously, in a very un-deerlike way, stalking through the forest.
Slowly he crept up to the edge of a clearing and spied, grazing in the center of a large field, another deer. He licked his lips, his deer-tongue coming out far further than it had any right to. In fact, it was then that he realized he possessed a number of very un-deerish qualities.
His teeth were far sharper than a normal deers, obviously designed for eating flesh rather than plants. His hooves were larger, and on either side retractable sickle-like claws had grown, almost like fingers. Jim flexed them experimentally and they grasped the ground tightly, digging furrows in the earth before folding back up into his hooves. His fur was much darker than a regular deers, and streaked with black. Of course, his long prehensile tongue was ever present, sliding wetly in and out of his mouth.
Jim glanced upwards and noticed his antlers for the first time, they were deep black and spread into twelve magnificent points. Each tip looked razor sharp and pointed angrily forward, perfect for tearing great holes in his enemies. He could feel his huge member tucked away in its creamy white sheath, tucked tight against his belly. His huge balls still churning with pleasure.
Much to his amusement, the more Jim thought about these traits, the more pronounced they seemed to become. He realized that he was slowly transforming his body back into a monster, the longer he occupied this body, the more monstrous it was becoming. He liked that idea very much.
It was then that Jim's stomach rumbled again, reminding him of the nagging hunger that had driven him here in the first place. Apparently all this transforming was hungry work.
With a predatory grin, Jim proudly stepped into the clearing. Letting the other buck get a good look at him. The other deer seemed disinterested, going back to grazing almost immediately. As far as it was concerned, another deer wasn't a threat.
As Jim walked slowly towards it, he couldn't help but chuckle to himself. This was going to be easier than he'd thought.
When he got within a few feet, the other deer caught a whiff of his scent and immedietly perked up. It began to realize the mistake it had made, but by then it was far too late.
Jim leapt at the other deer, opening his fang-filled mouth unnaturally wide and grasping the other deers neck. Warm blood seemed to explode into his mouth, tasting absolutely delicious to Jim. He quickly grabbed the deer with his hoof-hands, and tossed it roughly to the ground.
The deer had been so surprised it hadn't even had a chance to run. It lay on the ground, bleeding profusely from the wound in its neck. Jim could see the warm blood pumping in time with its heart, running out onto the ground.
“That won't do at all”, he thought to himself as he craned his thick neck down and let his tongue lap it up savoring the taste before tearing a huge hunk of flesh from the deer. Swallowing the meat was nearly orgasmic for Jim, feeling it slide down his throat before coming to rest in his starving belly quenched his hunger just a little bit, and he quickly began to chow-down on the deers carcass.
As Jim ate, he began to realize something strange, without thinking about it he'd seemed to grow a little bit. Not upwards so much as outwards. His muscles now stretched his skin taught, every minute flex visible even through his fur. In fact, he seemed much beefier than he had been before he started, every additional ounce was pure muscle however. It felt wonderful.
Jim continued to eat and watch his changes, wondering what fantastic change was now in store for him.