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Wolverine (Gulo gulo), large terrestrial carnivore of the weasel family, weighing up to 54 lb (24.5 kg). They live in tundra regions, the males defending a home range of up to 100 sq mi (259 sq km). Fierce animals, wolverines feed on insects, fish, small mammals, and carrion, although they have been known to attack big game, such as elk.

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21st Century Webster's Family Encyclopedia21st Century Webster's Family Encyclopedia - Willamette River to Yaoundé