Mary sighs, her dick sliding out of the cow with ease. It dripped cum and cow fluids. She fell back, lying the grass. The feeling of the cold grass on her balls and dick gave her chills. Her cock was soon filled with need again. She sat up and prepared to relieve herself again.
Suddenly she felt something stiff in her legs. They hurt, they hurt so bad. She couldn't stand, she had to bend over onto all fours, her hands pressed into the ground. Mary heard her hips cracked, and when the pain passed she tried to stand back up. But found she couldn't. She was stuck. She was quadruped.
"What's going on?!" she thought panicked. The stiff feeling spread to her hands, and a feeling of dread grew. Her hands started to meld together, and she lost all feeling in them. Until the stiff feeling subsided, and she was left with hooves. Her anus puffed out under her tail, and her balls grew even larger. They hung low and full. Brushing against the grass as she swayed, Mary mooed in pleasure.
That's when she realized when she couldn't talk anymore. She tried to form words, but nothing came out but mooes.
"No! I'm not a bull! I'm Mary! I'm not a bull! I'm not, I'm not... what am I not?" she thought, her thoughts becoming more and more muddled. Who was she? Why was she so upset? She was in a field, with plenty to eat, lots of females, and... there wasn't anything wrong with that was there?
The bull mooed, realizing he still hadn't relieved himself. His anus clenched and unclenched, releasing a load of smelly brown mush behind him. Then he approached another cow, ready to go another round. His lifted his large head, and stuck his tongue out. Teasing the cow's vagina, she mooed in pleasure and lifted her tail out of the way. The bull mounted her, and began pumping his seed into the cow. Part of his brain screamed at him to stop. That he shouldn't be doing this. That he should go home and reverse the changes. But what changes? He was a bull, and he was going to breed with as many females as he could.
He releases his first bull load into the cow. His first completely bull load, yellow, thick and smelly. He licked the excess from the cow's slit.