My pup is one years old and I keep noticing what looks like exema on the tips of her ears. Well the skin feels kind of thick and now she has a sore about the size of and eraser tip. I took her to my vet and she gave a cream. I gave some relief but she has another sore on the opposite ear. Could it be mites? I think I will try and other Vet. My pup is a schnauzer. Any way the sore was bleeding tonight because she must have scratched the scab. I also want to say It scabs over a thick dark scab.