Ritzy gives her tail tip a thorough cleaning, but more odd that this, she chews on her back toes...not just licking, but putting each whole "toe" in her mouth and biting down, almost like she is "sucking" on it....it is a nightly ritual that is part of her overall cleaning. It seems also to serve the purpose of grooming the back claws....really odd, but she is always clean as a whistle.