Just a thought: From time to time, the area around Shiloh's "pee spot" becomes red and irritated looking. The vet explanined it as being something like diaper rash caused by the area not getting completely dry. It must be itcy too, because she does a version of the butt scootin boogie that is a bit different from the anal glad problem. I think she is trying to get at that spot. Maybe Polly is also trying to scratch a different itch!!