Yoday I was sniffing noses with clyde and I noticed a small puncture in his ear. It is about the size of a needle end. I never noticed it before. He is in his own cage so I have no idea how that could have got there. There is a little brown spot where the hole is but it isn't flaky or scaly or anyting. It isn't even on the edge of the ear. Its as if he had his ear pierced. Any ideas as to what caused this?