When I gave Jimi a bath the other day I could see a large round spot on his back about two inches in diameter. At first I though it was grease or something, but it wouldn't wash off. It looks like it could be a bruise, but he hasn't been stepped on or anything lately. All of the rest of his skin is a nice light pink. The blotch is kind of a grayish color. I never noticed it before, but I suppose maybe it could be a birth mark?? Any ideas or suggestions would be appreciated. Should I be concerned? Thanks a lot--Niki & Jimi [Posted in FML issue 1320]