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The grizzly bear (Ursus arctos horribilis), also known as the North American brown bear or simply grizzly, is a population or subspecies [4] of the brown bear inhabiting North America. In addition to the mainland grizzly ( Ursus arctos horribilis ), other morphological forms of brown bear in North America are sometimes identified as grizzly bears.
Related: Video of Grizzly Cub Fishing for the First Time Is Making People Smile. Cool Grizzly Bear Facts. Grizzly bears are terrifying, and I wouldn't want to run into one out in the wild. As you ...
Bears of northern regions, including the American black bear and the grizzly bear, hibernate in the winter. [ 110 ] [ 111 ] During hibernation, the bear's metabolism slows down, its body temperature decreases slightly, and its heart rate slows from a normal value of 55 to just 9 beats per minute. [ 112 ]
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The 1958 Statehood Act set up a program for polar bear management, and further conservation efforts, including the 1972 Marine Mammal Protection Act, have limited polar bear hunts. [10] Polar bear populations may be threatened by oil development and global warming. [10] [11] Only about 4700 polar bears are known to inhabit Alaska. [12]
Grizzly bears roamed the North Cascades of Washington for thousands of years but have disappeared more recently. This week, the National Park Service and the U.S. Fish & Wildlife Service announced ...
The California grizzly bear (Ursus arctos californicus [3]), also known as the California golden bear, [4] is an extinct population of the brown bear, [5] generally known (together with other North American brown bear populations) as the grizzly bear. "Grizzly" could have meant "grizzled" – that is, with golden and grey tips of the hair ...
Grizzly bears are considered a threatened species in the lower 48 states under the federal Endangered Species Act. There are about 2,000 grizzly bears outside of Alaska. In the 19th century, there ...