Now that he was looking at the stallion, the wolf was right, this horse had an ass. Just looking at it made his new thicker cock stand erect once more. If it weren’t for the mutagen-filled shaft, Josh could’ve sworn that the horse was a mare. He grabbed the stallion’s luscious cheeks and repeated the same motion that started his transformation, a simple buttjob. The horse responded with a whinny and started to get hard himself. Josh was surprised at how tight the horse’s asshole was as he moved to start anal. It seemed like, despite his transformation, the stallion still had a human asshole, unlike Josh, who now had a musky equine donut. Now that he was the one doing the thrusting, he found out just how much he enjoyed fucking the horse’s ass. Soon, Josh put his entire length into the eager horse’s hole at started to rut him as fast as his remaining stamina could allow him to. Soon, they both came, the stallion all over the ground, and Josh inside the stallion’s newly-mutated donut. After draining his balls, Josh fell into the ground, exhausted from all the fucking (and getting fucked). The stallion cuddled close to him and whispered into his ear, “My name is Trent by the way” before drifting off to sleep with Josh.