The least weasel (Mustela nivalis), or simply weasel in the UK, is the smallest member of the genus Mustela and of the family Mustelidae (as well as the smallest of the Carnivora), native to Eurasia, North America and North Africa, though it has been introduced to New Zealand, Australia, Malta, Crete, Bermuda, Madeira Island, the Azores, the Canary Islands, Sao Tome, the Falkland Islands, Argentina and Chile. It is classed as being of least concern by the IUCN, due to its wide distribution and presumed large population.