As Jimmy felt his new powers surge within him he quickly became confident he was the cause of Petula's transformation. Still rock hard Jimmy initially considered transforming himself and giving the girl turned cow a good ploughing, but the sound of shuffling hay and a small gasp instead drew his attention.
Looking past Petula Jimmy saw the edge of a girl's skirt barely poking out from behind a stack of hay that stood near the barn door. Someone had been watching them he realised with a grin. "You'll have to wait for now" he whispered to Petula as he walked past her towards the barn doors, eliciting a discontented moo from her in response.
Reaching the doors Jimmy pulled them shut with a loud thud and turned to face the nearby hay stack. "I know you're there, come out now or I'm coming to get you" Jimmy declared confidently, his hands on his hips and making no attempt to cover his still bulging errection. He was rewarded with a small squeal and more sounds of hay moving about before their observer nervously emerged from behind the haystack.
The girl that emerged was another of Jimmy's classmates, a tiny girl named Mia, she was usually quite shy and kept to herself, her bright red hair the only thing that brought attention to her. "Well, well, well, what do we have here", Jimmy snickered in surprise".
"I... I..." Mia struggled to put together a sentence as she stared from Jimmy's cock to the cow now standing behind him and back again. "Did... did you do that to Petula" she managed pointing at the cow, "I think so" Jimmy replied, "and it looks like you quite enjoyed the show you little peeper" he laughed, nodding towards the large damp patch on her dress.
As ideas formed in Jimmy's mind he looked up from Mia's wet crotch and met her gaze, her eyes shifted as she squirmed in embarassment, "would you like to be next?" he asked slyly. Mia could only gasp as she realised what was about to be in store for her, she began to turn to run but it was too late, Jimmy concentrated his desires on how he wanted Mia to change and his powers surged as they began to make it so.