Hey /an/ I need some advice. I've had my hamster now for about a month and I noticed recently that she might have a tumor or something on one of her legs. She's walking on it so it's not hurting her and her behavior hasn't changed but it's twice the normal size and I'm not sure if I should worry about it.The pic is her btw.
I'd do some research in your phone book, and find an Exotic Animal vet, and talk to them. Chances are good that a standard vet won't be able to do much for your hamster.
Try one of these vets: http://ratfanclub.org/vetref.html and http://www.ratfanclub.org/vetrefw.html. But if it really is cancer, probably all you can do is euthanize her when it gets to the point that she is in pain. Cancer sucks.