Hi! I recently discovered 3 spots on Silvester's lower jaw. They are red and two of them missing hair. It could be that he scratched at the spots with claws, but no idea if there was anything before, or scratching is the cause. At the time of discovery it looked like pieces of food, tried taking it off, and the spot was bleeding. He does not seem bothered by it. Have anyone come across something like that? Ty.