Thank you all. We are going to try to get a photo of his ear. He will be 15 this year and so far he's the only one that has it out of 5 cats. Yes, on flea but can fleas cause an infection in the ear. He's eating and drinking and has a big appetite. He shakes his head which is a sign of mites, scratches his ear with his paw. Not sure if he is using his claws. All cats are inside cats, they have an enclosed deck outside but he doesn't go out their very often unless the sun is out which it hasn't been in awhile. We are in the PNW. We have a vet that comes into our area once a week to treat animals he's called the good neighbor vet but I will call a local vet here in town and see what they say it could be. They probably won't tell me since they would want to see him. I'll need to get a price for this but it shouldn't cost too much I hope.