The grizzly bear is a large subspecies of brown bear found across parts of Alaska, western Canada and the northwestern United States, distinguished by a pronounced shoulder hump of muscle, long claws adapted for digging, and grizzled fur tips that give it its common name. It is an opportunistic omnivore with a varied diet that shifts seasonally between grasses, roots, berries, insects, fish such as salmon during spawning runs, and occasional predation on large mammals including elk and moose calves. Grizzlies require vast home ranges and are generally solitary except for mothers with cubs, entering a den for winter dormancy in colder parts of their range where food becomes scarce. Once found across much of western North America, the grizzly range contracted sharply after widespread hunting and habitat loss following European settlement, and populations in the contiguous United States remain federally protected. Alaska and parts of Canada retain large, healthy grizzly populations, and cautious recovery efforts continue in some of the former U.S. range.
Facts
Classification
System (Realm) Living or Extinct Identification
Distinguishing AppearanceA pronounced muscular hump appears on adult grizzlies shoulders; black bears do not have this hump. 1 Scientific NameUrsus arctos horribilis 1 Connections
Child Taxon Of
In Biome
Source Encyclopaedia Britannica
In Ecosystem
Source World Wildlife Fund
Source World Wildlife Fund
In the Other Atlases
- Also in Geography Atlas: Mexico, found in there.
- Also in Geography Atlas: North America, found in there.
Sources
1. Grizzly Bear (Wikipedia)
Wikimedia FoundationLead section, first sentence
The grizzly bear (Ursus arctos horribilis), also known as the North American brown bear or simply grizzly, is a population or subspecies of the brown bear inhabiting North America.
Classification section, comparison with black bears
A pronounced muscular hump appears on adult grizzlies' shoulders; black bears do not have this hump.
View the Source 2. GBIF Species API
Encyclopaedia Britannica
Encyclopaedia Britannica, Inc.In Biome: Temperate Coniferous ForestView the Source Catalogue of Life
Species 2000 & ITIS Catalogue of LifeChild Taxon Of: UrsidaeView the Source World Wildlife Fund
World Wildlife Fund- In Ecosystem: Pacific Northwest Temperate Rainforest
- In Ecosystem: Yellowstone
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