Their closest relative is the European polecat, and it is believed that the domestic ferret is a direct descendant of this species.
Ferrets are domestic animals.
They should not be classified as wild, as ferrets have been domesticated since at least 4 BC and have since lost all of their wild instincts and ability to survive in the wild. In fact, if ferrets escape the safe confinement of your home, the average length of time that your pet can survive is a mere three to five days. Use the services of a ferret shelter. Ferrets are also not exotic pets. While many pet stores classify ferrets as exotics, the definition of an exotic pet is one that is also found in the wild.