grizzly bear(redirected from Ursus arctos horribilis)
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grizzly,large, powerful North American brown bearbear,
large mammal of the family Ursidae in the order Carnivora, found almost exclusively in the Northern Hemisphere. Bears have large heads, bulky bodies, massive hindquarters, short, powerful limbs, very short tails, and coarse, thick fur.
..... Click the link for more information. , characterized by gray-streaked, or grizzled, fur. Grizzlies are 6 to 8 ft (180–250 cm) long, stand 3 1-2 to 4 ft (105–120 cm) at the humped shoulder, and weigh up to 800 lb (360 kg). Primarily omnivorous, they are excellent hunters and prey on large mammals such as deer; they relish ants and other insects and depend on plants, roots, and berries to supplement their diet. Once widespread in the western half of North America, from the Arctic Circle to central Mexico, habitat destruction and hunters nearly exterminated the grizzly. Classified as threatened under the U.S. Endangered Species Act, small groups can be found in protected regions of Alaska, W Canada, and the U.S. Rocky Mts. The grizzly is a subspecies, Ursus arctos horribilis, of the brown bear, U. arctos, which has small populations throughout North America and N Eurasia; it can crossbreed in the wild and captivity with the polar bearpolar bear,
large white bear, Ursus maritimus, formerly Thalarctos maritimus, of the coasts of arctic North America, Asia, and Europe. Polar bears usually live on drifting pack ice, but sometimes wander long distances inland.
..... Click the link for more information. . It is classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
..... Click the link for more information. , subphylum Vertebrata, class Mammalia, order Carnivora, family Ursidae.
grizzly bear[′griz·lē ‚ber]
The common name for a number of species of large carnivorous mammals in the genus Ursus, family Ursidae.
a variety of the brown bear, Ursus arctos horribilis, formerly widespread in W North America; its brown fur has cream or white hair tips on the back, giving a grizzled appearance Often shortened to grizzly