Hi all! I adopted my handsome man, Toby, about 3 weeks ago. The shelter I rescued him from estimated that he's about 3 or 4 years old. 100% indoor. He's already been to the vet for an initial checkup about two weeks ago and everything was normal. Just noticed tonight that he has a patch on the back of each hind leg where the fur is gone and the skin seems rough and dry. I'm a first time cat owner so I have no idea if this is normal or if there's any cause for concern Any thoughts? Thanks!