I just noticed my two rats have been itching. They have some hair loss behind ears and some scabs all through out parts of their bodies. I was reading online that it could be mites or lice and found no indications of either. Their diet was another issue. Diet consists of fortified blocks with vitamins and minerals, and for treats or snacks I feed them granola cereal with raisins, dates and almonds in it, grain from the barn ( they seem to love it ) I also give them cheese. Thats what they normally get. I also give them carrots or sometimes give them noodles from dinner. Any ideas on what this scratching could be from? No fleas either. I read that to much protein can cause hair loss and itching.