A pig.
Prince Damon felt pain in his stomach as he fell on the floor. "Aaah what's happing to *oink* me?"
Circe just smile at the prince's pain. "You will see soon enough my new pet." He felt his face push out into his pig snout.
"I'm no one's *oink* pet. I'm a prince a *oink* ruler." His stomach expanded as he become fatter.
"The only thing you'll be rulling is other pigs and your kingdom is a bunch of mud." She goes, to the change prince, and scratches his chin.
"You won't be with other princess's. You'll be with other pigs breeding with my sow's."
His hands and feet change into his new pig hooves. "*oink oink*" his ears change as he now had a curly tail. Losing his humanity as he was now a hog.
"Lady's take my new pet to his new home. I'll have some fun with him later." Circe's headmaidens then takes Circe's new pet to his new home.