Despite its official designation as domestic, how is M. p. furo listed by the IUCN in certain areas?

Answer

As an established invasive alien species

While the scientific classification *Mustela putorius furo* officially confirms the ferret’s status as a domesticated animal, its ecological impact outside of its managed environments is recognized by conservation bodies. Specifically, the IUCN's Global Invasive Species Database includes the ferret as an established invasive alien species in certain regions where they have been released or escaped. This highlights a duality in perception: domestically secure, yet ecologically potent enough to negatively affect local ecosystems in vulnerable areas like islands.

Despite its official designation as domestic, how is M. p. furo listed by the IUCN in certain areas?
animalclassificationwhitealbinoferret