So this is about my sister's dog. He is a 4 month old yorkie. Anyways, he is pretty smart and knows to go potty outside, but lately he has been peeing inside a lot. She took him to the vet to get him checked out and the vet examined his penis and it was kind of...raw i guess. She mentioned that it bled sometimes also. Anyway, he has this stuffed tiger that he has had since she got him, and he had a bad habbit of humping it. The vet says this is what is causing his pee problem, he wrote down "excessive masturbation" on his file and gave her some antibiotics to put on his pee pee. Moral of the story is don't let your dog hump stuffed animals!