Introduction
wolf, carnivorous mammal of the genus Canis in the dog family. Once distributed over most of the Northern Hemisphere, wild wolves are now confined to the wilder parts of a reduced range. Three wolf species (the gray wolf, red wolf, and coyote) have been generally recognized, although there is much local variation within them; some scientists have questioned whether the red wolf is truly a separate species (see below).
Other living members of the genus Canis include the jackal and the dog, which is classified as a subspecies (Canis lupus familiaris of the gray wolf. All Canis species can interbreed, producing fertile offspring; the Eskimos have interbred wolves and dogs to produce hardy animals for pulling sleds. The maned wolf, Chrysocyon brachyurus, found in wooded areas of central South America, is not a true wolf, although it is a canine (member of the dog family). It has extremely long, stiltlike legs and an erectile mane on the neck. Strand wolf is a name for the brown hyena (not a canine) of Africa. The aardwolf is also a member of the hyena family.
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