Ferret

Although domesticated ferrets are not endangered, they are closely related to one of the most endangered species on our planet, the black-footed ferret.

The Black-footed Ferret (Mustela nigripes) is a small carnivorous North American prairie animal closely related to the Steppe Polecat from Russia, and a member of the diverse family Mustelidae which also includes weasels, mink, polecats, martens, otters, and badgers. It should not be confused with its close relative the domesticated ferret.
The Black-footed Ferret is an endangered mammal in North America, according to the U. S. Fish and Wildlife Service (USFWS). They became extirpated in the wild in Canada in 1937, and were classified as endangered in the U.S. in 1967. The last known wild population was taken into captivity in 1985, a few years after its accidental discovery in Meeteetse, Wyoming. Release of captive animals has successfully re-introduced the species to parts of its former habitat, and currently these populations have made what has been called an "astonishing comeback".

Black-footed Ferrets are about 18–24 in (45–55 cm) long, with a furry 6 in (15-cm) tail, and they weigh roughly 1 kg (2 lbs). Like most members of the family, they are very low to the ground with an elongated body and very short legs. Their fur is white at the base but darkens at the tips, making them appear yellowish-brown overall, with black feet that start at the hip a black tail-tip, and a distinctive black face mask. These blend in well with the prairie ecosystem in which they live.

For more information about black-footed ferrets, please visit: [link]