I have a 3 year old male ferret. He has regular vet visits and my vet ensures me he is healthy. But he goes from fat to skinny about every 6 months. He will plump up then all of a sudden just lose all his extra weight and become skinny again. There has been no change in diet and they are not caged, so they determine their activity level. I have 5 other ferrets that are not having this problem. Anyone else out there have this problem? Jennifer Lollar Payroll/Benefits Coordinator Jackson Iron & Metal Co. Inc. P.O. Box 23309 Jackson, MS 39225 601-760-6014 Fax 601-355-3870 [Posted in FML 7374]