Master is done playing with Sprig for the night and he locks his bruised and forlorn plaything away in the dog crate. Sprig checks the doors and the resigns herself to another night in the cage. Instantly overcome with boredom Sprig begins to play with herself. Her slight whimpers and the scent of her wet pussy summons the household dog. Sprig mustn't be too loud or she might get caught as she struggles to take the increasingly large knot. Her muscles lock tight around the giant knot and don't want to let go after she quietly cums on her dog bed