he has a little staining around his mouth, as well, but not like his eyes where it goes in a half circle under both of them. the breeder was feeding him purina puppy chow (i know, no no no!) and i didn't want to change it over because i don't want to upset his tummy too much, not to mention i'm not sure what the fat levels, etc, need to be for a little paw yet. the purina has red dye in it, and i remember reading it caused them, maybe it was wrong though. who knows! maybe it is just him teething, since he is 3 months old.