My dwarf hamster of three years is now obviously a senior and has been diagnosed with cataracts. (Apologies I don't know how to spell it) His behaviour has changed as he has become a bit slow which is all normal with age, that isn't what I'm worried about though. One of his from teeth seems to have been overgrown as I can see it coming out his mouth when I turn him over he has many dental toys on his cage to wear his teeth down so I'm confused to why he isn't using them. Is this normal for his age? Do I have to do anything to help?