This is the second of these sores. The first one was almost this big and you can now see it closer to his nose, as a small red spot. It's opening up a bit with the constant licking and rubbing. I started treating this one earlier than the first and had made progress, ran out of antibiotics as the holiday happened. Started this round the day after Thanksgiving, only now it's a bigger dose. There is no way to keep a dog from licking his lips, so it's impossible to keep this sore clean and dry. So far neither of these sores has dulled his apatite. His bowel seems normal. I'm about at my wit's end.
He does not want to let me clean it or take its picture. So, this is a blurry and badly lit picture, but you can see how deep it is and how big in diameter--bigger than a quarter for sure.