>Is this in ferrets only or all animals. I have had cats and dogs that got >them, and seemed to always end up with surgical removal. Just trying to >figure out if this is species specific or individual specific. Mast cell tumors in ferrets are generally benign, but they are an exception to the rule. These are really nasty in cats and dogs, and should be removed ASAP, and the animal checked for systemic involvement. We've lost 2 dogs at the hospital in the last 2 months to this, despite excellent care by the owners, extensive surgery and chemo. -Dr. Karen DISCLAIMER: This e-mail is provided for general informational purposes only. It is in no way intended as a replacement for a consultation with a qualified licensed veterinarian. If you are concerned about your pet's health, you should seek the advice of your regular veterinarian as soon as possible. [Posted in FML issue 3404]