How much time do you spend with him? He could be bored and as a result barbering (overgrooming) himself. What kind of bedding is he on? Sometimes bedding such as pine and cedar can cause allergic reactions, plus it's not healthy to begin with. He could also have mites or lice. I would suggest taking him to the vet.


I have a house mouse named Fred, and he is pushing two years old. So they can live long if you take good care of them.