My 6 year old male chin is a major fur chewer! It is so frustrating! I have toys and chews and a wheel and still he chews...he is not alone, he has another male buddy. They were introduced when they were babies and are 6 months apart. They absolutely adore each other, have never fought, they even sleep in the same hut (which is big but not quite big enough for them both ). So I know it's not loneliness...boredom maybe?? Can't imagine that being the case he's got so much to do...so whats the problem!!! They have a huge three level cage, live in my room which is very quiet, and aren't subjected to a lot of stressers. But he still chews! Could it be genetic? I got him from a breeder up by New York. I'm thinking it has to do with them...I should have walked away when I was brought into a small smelly room with two small cages that were filthy and had at least three or four chins in each. But I was young and just drove three hours to pick him up. SO could it be bad breeding? Learned behavior from the mother? Also when I got him his ears were all chewed at the edges. Don't get me wrong he is a beautiful boy and has the sweetest temperament.