Staggering forward, Jared's eyes widened as he walked out of the back of the barn and saw the cluster of cows, with a whole field of more beyond. The smell that had attracted him was really a mix of many females in need. Tyler came out behind him, having stepped out of his shorts. "Jared! They're cows!"
Jared nodded, eyes glazing over as his enormous bull cock swelled out and his testicles grew taught. "Yeah! Cows!" The slick cunts and flies and shit and stink all became a blur in his mind as he approached the nearest female in heat. All that mattered was mating. He was a little too short to fit easily, but the cow cooperated and seemed to squat down to help him. He heard Tyler shouting at him, but as soon as he pushed into the cow, Jared knew this was what he had been born to do! The thick lips of the cow's cunt closed in around him and she bellowed as he thrust in. All though left his head as he was overcome by blind lust, and he pushed harder and deeper, driving in until his swinging balls slapped against her swollen udder. It did not take long to shudder in release, and he fell back into Tyler's arms.
Before his mind could clear, Jared caught another needy scent, and felt himself already recharging. Pulling free from Tyler, he found yet another very willing female. This one seemed a better match, as did the one after that, and the one after that. Jared could no longer count, could no longer think. He finally came to his senses some time later. He was standing in the middle of the corral, panting, but feeling incredibly satisfied. It was more than just being content - it was as if he had accomplished something incredibly important!
Tyler was sitting on the fence, still naked, watching Jared with a resigned look. "I figured out why our parents wanted us to be like this. Except I think you and I are switching families."
Confused, Jared shook his head, then stopped. He felt really heavy and thick. A glance down showed him a thickly muscled and furred body with bull's hindquarters. Then he reached up and felt his face. His muzzle. He bellowed in horror as he stumble dover tot he water trough. The reflection confirmed his fears. He was a massive minotaur, a humanoid bull that now matched his bovine cock and balls.
Tyler sighed. "You are a perfect ranch hand for cattle now. Stong and able to meet the needs for a bull, and take care of the animals as well."
"That's right!" Tyler's parent's came out fo the barn, both smiling. "You will be very happy here, Jared. And Tyler will be happy over at your horse ranch! You parents already have a lovely Clydesdale mare ready and waiting for him. He'll take your place, and we'll all be happy!"