Jeff was pondering when his faithful labrador, Delia, walked in. She ran over to him and licked his face. "Delia, stop it! I'm trying to-" Jeff stopped once he saw an option that made him shudder with pleasure: Cock. He looked at Delia, who seemingly gave a nod. They both wanted this. He set it up:
Part: Cock
Percentage: 50%
Species: Dog
Race: Labrador
Duration: 1 week
Alter Reality: Y
Pleasurable: Y
Aware: Y
Jeff sat back and took off his clothes as he hit the Transform button, and locked the door. He stared down at his cock, which began to grow points, and turned a light shade of red. His circumcision was negated when he grew a sheath that went up his cock halfway. Delia panted, desperately wagging her behind to get Jeff to penetrate her vagina. Jeff obliges, climbing onto his bed, and mounting her, his weight put into his legs.
They fucked for hours, and no one thought anything was wrong. His mom knocked on the door, only to hear Delia's howl, and to shrug it off.
Jeff stopped, only to realize he couldn't pull out. "You knotted me, silly." Jeff stared wide-eyed at the dog below him, and realized he was the same size as her!
"You're my mate, so you're becoming a labrador like me!"