This story contains anthropomorphic/furry characters. All sex is consensual, even when it seems like dubcon, and all characters are over 18
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If there was one thing Harrison loved, it was getting his hands on a nice virgin mare. He would trade anything if it meant he got to be the first one to break in a pussy. The clydesdale had been working at Sommer Ranch for twelve years now as a stud. He'd had his fair share of experienced mares and-- don't get him wrong, there's something to be said for a sopping wet pussy that knows how to take a breeding-- but it's the new ones that really get him going. Knowing that his seed's going to be the first in that womb really gets him going. There's a reason his impregnation success rate is so high.
The start of every summer, mares start coming in from across the county. He gets to watch his appointment list grow as they practically line up to be bred by him. He notices a somewhat low amount of new women. The number of red V's next to names has him disappointed.
It happens every now and then. There aren't always girls who need a stud to break them in and there aren't always very many girls for the summer. He does take notice of the singular "Donkey" listed under the Breed category. He's never had a donkey before. The idea perks him up as he thinks about getting a real stubborn mare under him.
The weeks until her appointment are agonising the longer he thinks about that donkey. He does his job as usual though and gives horny mares his load until it's time for his virgin donkey.
She gets a separate pasture where other horses won't be able to see what's happening. Old Sommer insists she be hitched to a breeding post no matter what, to make sure she doesn't damage his star stud. The compliment makes Harrison blush and twitch in his shorts. Within two hours, he is informed she's ready for him.
Indeed Nicole is ready, her hands cuffed to the post and her head held by a lead rope close to the wood. Her grey flank twitches with annoyance, tail flicking and ears pinned back. She eyes him up and down, taking a long moment to inspect the bulge in his shorts. He can smell how ready she is.
It's easy to see the way estrus is affecting her. Her body shudders and she'll shake her head in its restraints, stomping her feet as slick flows like a river between her thighs. Harrison's cock, which had previously been at half-mast, slides out of the sheath in an instant. He drops his gym shorts from around his waist.