The daily grind of being a Welsh pony stallion and kept in a stall was taking its toll on Ken's mind. The same thing like a regemine of daily things done for Ken to keep him alive till called for having sex with some mare in need.
The ritual of a stallion working his manner toward the final mounting of a mare was for Ken his only grasp to remembering what he'd been. His mind was fading away into sensual lusts and instinctive desires without thoughts he strived to get what he wanted. Pracing about in his box stall the only real break from lusting for those mares out in the pasture was when he needed to urninate, crap, or masturbate himself.
Even those three times of need and pleasure were making a true animal out of the man he was. His every waking moment was being taken by the wanton lust for sex with mares.
As night came so also came the Genie if only to taunt his foolish prey.
"Good evening Ken, tomorrow is day fifteen and the last bastion of your human memories will fade into pure beastial desires. What you were is all gone and what you are is what you shall remain. A pony stallion just like your once owned pet you are now of body but by tomorrow night the mind will be total animal too! I leave you tonight with the thought of losing yourself to becoming a pure bred beast of the fields, A naimal being like all animals without reasoning powers just the lusting instincts of what it is to be a beast! Now for tonight I grant you something your beastly lusts should find delightful. To you inside your stall is for the night a mare in heat. Her lusting need for sex is what drives her to allow you to mount her time after time till by morning I suspect a callast should form on that big black cock. So fuck away my master, be your true self!" said the Genie as he let into Ken's stall two horny mares in season.