Adrenal disease is extremely common in ferrets in North America and causes significant welfare harm, with prevention and management strategies improving quality of life.
Ferret adrenal disease welfare represents a systemic problem created by industry practice. Early neutering at 5-6 weeks, standard in North American ferret breeding, is strongly linked to the very high adrenal disease prevalence seen in North American ferrets. European ferrets, typically neutered later or kept entire until needed for breeding, show dramatically lower rates. The welfare harm is significant: adrenal disease causes chronic illness, discomfort, and eventually serious reproductive pathology. Changing breeding practices to delay neutering would reduce the welfare burden substantially but faces industry inertia.