Part of Hall of North American Mammals.

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July, 11:30 P.M., Nunavut, Canada

Canada’s Barren Lands are so far north that trees barely grow and the summer sun sets near midnight. This is prime wolverine country: cool, remote and with room to roam. Wolverines are tireless nomads, traveling many miles a day and scaling sheer slopes to find food and mates. Their strength and ferocity is legendary, but wolverines are choosy about what they attack. Caribou are hunted only when floundering in deep snow—or are scavenged after a wolf kill.