To Rochelle Newman - Fezzik's cyst may be just that - a cyst. Sweat gland cysts are very comon in ferrets and may arise in the perianal area. My suggestin - have your vet remove it and get it examined by a pathologist. No sense wondering what it is - let's find out... Bruce H. Williams, DVM Dept. of Veterinary Pathology Chief Pathologist, AccuPath Armed Forces Institute of Pathology [log in to unmask] Washington, D.C. 20306-6000 [log in to unmask] [Posted in FML issue 1227]