My cat Milo has a mark on his face, spanning his left lip. It's this weird reddish/brownish mark and it's a little scabby. Milo is a white flame point cat, so it's definitely not developing coloration. It doesn't seem to bother him and it's not swollen, but I'm worried that it might be something serious. My roommate recently got a puppy, and they've had brief, unhappy contact, but no injuries or anything. Could it be from the dog? This is a picture of the mark. It's bad lighting, I know, but Milo is a stubborn kitty and this was the best I could do. Does anyone have any ideas what it could be?