You can see pretty good in the pics. Under both armpits, as well as both groin, where the leg and body meet. He also has a spot at the base of his tail, although that is not red. He does scratch. I did put revolution on him two days ago but he almost seems to be itching more since then. Any ideas???? He also has a spot on his head, it is sort of crusty but its grey, not red or pink.