Ferret/ˈferɪt/ Definition 1 of 3Pro Tip 1/3Pet or hunter The animal ferret can be a friendly pet or used by humans to hunt. On the farm, they use ferrets to keep the rabbit population in check. Pro Tip 2/3Physical traits Ferrets are known for their long, slender bodies and curious nature. The ferret wriggled into the narrow pipe, chasing the scent of a rabbit. Pro Tip 3/3Not wild Although related to wild weasels, ferrets you encounter are usually domesticated. Her domestic ferret was much tamer than its wild ancestors.