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wolverine
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A wolverine with dark brown fur and lighter sides climbs along a slanted old tree trunk in a forested habitat. A wild wolverine runs across grassy, open mire in northern Finland, its body stretched mid-stride with blurred motion in the background.
Wolverines and ravens: Finland's winter survival duo
A European wolverine, Gulo gulo, stands on a snow-dusted log with a forest background and patches of snow on the ground. A wolverine lies on the ground among dry leaves and grass, baring its teeth with its mouth wide open. A wolverine (Gulo gulo) with dark brown fur and lighter brown sides walks along a fallen tree trunk in a forested area.
Summer in the Siberian Arctic: A tale of survival
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A wolverine with dark brown fur and lighter sides climbs along a slanted old tree trunk in a forested habitat.
wolverine (Gulo gulo) A wolverine (Gulo gulo) walking across a tree branch in the forest.

wolverine

mammal
Also known as: Gulo gulo, carcajou, glutton, skunk bear
Written and fact-checked by
Britannica Editors
Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree....
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History

wolverine, (Gulo gulo), member of the weasel family (Mustelidae) that lives in cold northern latitudes of North America and Eurasia, especially in timbered areas. The wolverine is noted for its strength, cunning, fearlessness, and voracity, and the species is renowned for its ability to face down and fight larger predators that are more than twice its size. The wolverine resembles a small, squat, broad bear, 65–104 cm (26–41 inches) long, excluding the bushy 13–26-cm (5–10-inch)...

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