I would guess an allergy or a flea irritation. Or possibly he got some poo stuck on his rear? I have had one or two get irritated back there if they got a little stuck in their tail hair or if they got a little loose stool. I put AD ointment (diaper rash) on them and you can either use a e-collar or I have put a baby diaper (usually size 1) on them for a few hours while it dries, so they can't get to it. |