Wolverine

The wolverine (Gulo gulo) is the largest land-dwelling species of the Mustelidae or weasel family (the Giant Otter is largest overall), and is the only species currently classified in the genus Gulo (meaning "glutton"). more...

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It is also called the Glutton or Carcajou. Some authors recognize two subspecies: the Old World form Gulo gulo gulo and the New World form G. g. luscus. A third subspecies limited to Vancouver Island (G. g. vancouverensis) is also occasionally described. However craniomorphic evidence suggests that the Vancouver Island wolverines are properly included within G. g. luscus.

Anatomy

The wolverine (Gulo) is a stocky and muscular animal , considered carnivorous but known on occasion to eat plant material. It has glossy brown hair with stripes of dull yellow along the sides. Its fur is long and dense and does not retain much water, making it very resistant to frost, which is common in the wolverine's cold habitat. (For these reasons, the fur has been traditionally popular among hunters and trappers as a lining in jackets and parkas, especially for wear in Arctic conditions). The adult wolverine is about the size of a medium dog, with a length usually ranging from 65-87 cm (25-34 inches), a tail of 17-26 cm (7-10 inches), and weight of 10-30 kg (22-66 lb). Males are as much as 30 percent larger than the females. In appearance the wolverine resembles a small bear with a long tail. It has been known to give off a very strong, extremely unpleasant odor, giving rise to the nicknames "skunk bear" and "nasty cat." Wolverines, as other mustelids, possess a special upper molar in the back of the mouth that is rotated 90 degrees, or sideways. This special characteristic allows wolverines to tear off meat from prey or carrion that has been frozen solid and also to crush bones, which enables the wolverine to extract marrow.

Behavior

The wolverine is, like most mustelids, remarkably strong for its size, and is considered one of the most ferocious of that family. It has been known to kill prey as large as moose, although most typically when these are weakened by winter or caught in snowbanks. Wolverines inhabiting the Old World (specifically, Fennoscandia) are more active hunters than their North American cousins. This may be because competing predator populations are not as dense, making it more practical for the wolverine to hunt for itself than to wait for another animal to make a kill and then try to snatch it.

Read more at Wikipedia.org