The largest member of the genus Mustela in Britain, the European polecat has a weasel-like slender body, short legs and a broad head. Distributed throughout much of Europe, but absent from Ireland, European polecats declined in the early 20th century, reaching their lowest ebb by the 1950s.
Weasels are mammals forming the genus Mustela of the Mustelidae family. The genus includes the weasels, European polecats, stoats, ferrets and European minks. They are small, active predators, long and slender with short legs. The Mustelidae family is often referred to as the weasel family. Gestation period: 40 - 43 days (European polecat) · 280 days (Stoat) en.wikipedia.org
The ferret (Musteia putorius furo) is a domestic pet. It is not a wild animal, though ferrets are descendants of the European polecat (weasel) and are, therefore, close relatives of skunks, mink, otters, and badgers.