A simple one

With a snap, Natalia had her new headgear on

Perfect, but you are supposed to be on your hands and feet, I mean hooves," said John.

Natalia made a whinny sound and dropped to her hands and feet.

"Perfect, there's an opening for your pussy and anus, and guys can jack themselves off with you hair if they have that particular fetish.

Natalia made another whinny sound.

"Let's trot you out." John produced a riding crop and smacked Natalia sharply on the ass. She raised up and whinnied again before crawling towards the door.