Does anyone have experience with Mast Cell tumors on their ferret? My Smokey is 6 and had one removed early this year. It was benign but now I see two, maybe three more. I don't know how much of a threat this is to her health. Should I leave them as they are often benign, or keep subjecting her to surgery, which is expensive? Other than these she seems in good health. Lara [Posted in FML issue 2741]