Thanks, Sab!
It really just amounts to a scrape, I guess, but it just made me sick to know I did such a thing to him since he's already so skittish! Still having a lot of clumps of stuff on his rump, I managed to just pull some of it away later this evening, making him even more unhappy, but I was worried about germs and infection on the injury.
I'm going to try Pat's suggestion of moistening the areas that are left.
One friend has her cat shaved! LOL...The gray would never stand for that unless anesthetized!
Patty