Mike went from feelings of horror to urges of sexual pleasure. Bouncing about the wood seat his tail wipped around first in glee and then in anger. Tall ears twitched and round eyes rolled in their sockets. Straining to keep a single memory of who he was alive his screams were fast turning coarse into rough gravely brays.
Straining to speak but finding thick lips and an uncoordinated tongue with buck teeth the large gap then too, slurred everything into those braying sounds.
Arms ached as cramping muscles grew and changed positions. Soon forelegs would hold his weight, and help him run over the land. His legs cramped up first as Mike screamed from pains he could not rub or touch.
The old man Shopkeeper stood by watching with a saddistic grin. "Don't bother you head about pains like that, when you trot back to the corral after a day pulling coaches you'll get cramps then too!" and the he'd laugh.
This angered Mike as to the mean attitude the man had for him whether human or animal. Yet even as the changes occured Mike struggled to keep his mental thoughts as human as his weak Donkey brain might allow.
Slowly the pains subsided, as strange urges built inside his head and guts the Old Man helped him out of the booth. Sitting with hind legs stretched out Mike slowly began to feel life from the Donkey point of view.
Feeling as he sat there in this strange postion he thought of his puppy sitting up to beg. His forelegs bent in but hung out as hind legs stretched out while sitting. His maleness now hung in a sheath felt limp and almost like it wasn't there at all.
Then a wild and terrible thing happened. As he sat feeling and wondering the young lady came and knelt down between his legs.
"Let her show you and bring you to feel what over the course of time will be the driving ambition of your Donkey self." suggested the Old Man.
Leaning forward the girl fondled those huge balls. Her nimble fingers rolled them around in the leathery sack till a bestial urge began. As she lightly blew air across those long feeler hairs which sprout out of the sheath, Mike's urge turns to a lusty desire.
Like a balloon filling with air Mike's maleness fills quickly rising up and out of the sheath. Her soft hands stroke the lengths of this new member. Mike rolls his eyes and begins to breathe in heavy draughts of air.
A harsh bray comes out Mike's open mouth as the Donkey he's become jumps to stand upright. Suddenly he's eight feet tall and looking down on puny humans. His male Donkey's cock waves about in the air as passioned desires urge for a release.
Then the Old Man grabs a CO2 fire extingusher and sprays Mike's groin with chilling frost. The lust and urge falls away and with a thud the new Donkey falls to all fours, his cock and sheath white with chill.
"Now you are of value to me! A Jackass you are whether you wanted it or not! I shall sell your sorry Ass to the Park and enjoy seeing you trot by be assured I'll wave a hello." chuckled the Old Man.