It was the wagging of the tail that finally sent him over. I had fucked him several times in the past hour, keeping him in a cock ring. It kept him hard and dripping precum. But it was finally when I pushed the tail plug into his hole and told him to do laps around the house that it happened. I watched him the doorway as he whimpered and whined, his cum dripping down to the floor. The tail shook as he shivered. Good boy. Now lick it up.