"Come to me child, and I will help you," a woman's voice said and you turned in surprise to see the horse looking at you.
You looked around trying to figure out who had said that, it wasn't like it was the horse or something, that was silly, horses couldn't talk. It had come from behind you so maybe there was a human standing behind her somewhere or something.
"Hello?" You called out and tried to get a look behind the mare who was still looking at you. "Mom? Is that you?"
"Sweetie, your mom isn't here right now," the voice said again and this time you saw that it was the horse who was speaking. She looked at you with her big eyes. "But perhaps I can help you. Come over the fence and I'll see what I can do to at least make you comfortable."
You weren't sure what to say to that, but something about the way she looked and smelled made you want to trust her and join her in the pasture. Looking around there wasn't anyone looking at you right now, something was growing in your mind that told you to join the horse on the other side.
You finally gave in and climbed over the fence and found yourself on all fours on the other side. Your horse ears perked up a little as you looked around, your body was sprouting fur all over it as your body adjusted to horse proportions and a tail started to grow out of your behind.
Finding your clothes restricting (plus you weren't human, why were you wearing them anyway?) you managed to get them off before you turned your attention back to the mare who smiled as your changes continued. Your body tingled a little as your mental transformations started to kick in and the smell of the mare hit your nostrils as your human mind was slipping away.