Ferrets are highly energetic, social carnivores that require far more space and interaction than typical small pet housing provides.
Ferrets kept in small cages without adequate exercise and social interaction suffer from chronic physical and psychological deprivation. Their high activity requirements - they would range extensively in the wild - are poorly met by typical pet setups. Health problems associated with early spaying and neutering are widespread in the US ferret population and cause significant welfare harm. Dietary mismanagement with high-carbohydrate foods contributes to insulinoma development.