I really meant to get these posted earlier than this. Sorry. I promised several people these references. Here they are: 1. Luttgen PJ, Strots RW, Rogers KS, Morton LD: Insulinoma in a ferret. J Am Vet Med Assoc. 1986; 189:920-921 2. Caplan ER, Peterson ME, Mullen HS, Quesenberry KE: Surgical treatment of insulin-secreting pancreatic islet cell tumors in 49 ferrets. ACVS Abstract. Vet Surg 1995; 24:422. The second reference is the one that gave us so much hope about Puck's condition, and helped us decide that the surgery was a good thing. If you are interested in reading them, go to your local library. They may not have these journals, but they will be able to get you Xeroxes' by the interlibrary loan service. Theresa Kwasny [Posted in FML issue 1865]