Emily tried to shout for help.
"MoooOOOO!" Was all that came from her mouth.
She tried to focus on how to get out, but her only thought was sex. She really needed it right now. 'wait...orgasm means stand up' she remembered.
Emily quickly backed herself up against one of the fenceposts, and frantically started rubbing herself against it, mooing loudly with each stroke. 'This feels soo good' she though, face pushed into the ground as she bounced her back half up and down against the post.
Suddenly something pushed Emily away from the post, knocking her to the ground. She looked up and it was the bull from earlier.
Emily's first reaction was to get away. She covered back on to all fours and tried to trot away, but she knew in the back of her mind that it could smell her arousal. It caught up to her quickly, and mounted her, holding her in place.
She could feel it's huge rod poking around near her pussy, trying to get entry. She couldn't move. But then it finally pushed into her, and she realised she didn't want to move.
After a couple of small thrusts, the bull entered her fully with one big push.
"MOOOOO" Emily screamed. The bull relentlessly pounded into her, and all she could want was more. She hit her first orgasm in less than a minute, her face heating up as it continued. She could see on the edge of her vision that her nose was widening out more and pushing itself out, away from the rest of her face.
The bull continued, and Emily even found herself pushing back into it, trying to get it to go as deep as it possibly could. 'Cum...need cum...cant lose cum' she thought. Her primal instinct to breed was taking over her mind and body. She opened her eyes briefly and made out a pink, blobby figure by the fence watching her.
'N-Nate...?' she she managed to think, before her orgasm hit another high, forcing more moos out of her. Her face felt even hotter, and she could tell it was her fur growing in over her newly shaped head.
Suddenly Emily could feel the cock starting to throb inside her, and instinctly started pushing back into it as hard as she possibly could. Finally the bull came, pumping load after load of its seed into her, making her orgasm one final time.
The bull pulled out as soon as it was done, leaving Emily there, legs quivering, trying as hard as she could to not let any cum escape. She failed though, and felt it running down her leg, then let herself topple over, exhausted.