I'm probably worrying for nothing. I just noticed that our male cat has a scratch along the pink part of his nose. It's not bleeding, and doesn't seem to bother him, but is there anything I should put on it to help it heal properly? (thinking Polysporin, but I know that's not a good idea). Also, our 2 cats have always had wrestling matches, but recently, they've included some hissing. Should I worry? We have a 3 year old female and a 1 year old male (both fixed, and both have all their claws)