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BEAR SCIENCE FACTS |
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Click on the bear to learn how to Draw a Cartoon Bear | ||||||
As winter approaches, brown bears—often called grizzly bears—prepare for a long hibernation. During the fall, a brown bear eats practically around the clock, stocking up for the four to seven months when it'll have to live off stored body fat. A grizzly may chow down on 90 pounds (40 kilograms) of food each day. Mama bear doesn't even wake up as her blind and hairless cub is born midwinter. The tiny bear, about the size of a chipmunk, is just strong enough to crawl into a position where it settles in to nurse. f she succeeded in finding enough food to have a healthy store of fat, the embryo, or tiny developing baby bear, continues to develop and is born after a couple of months. If the mother didn't fatten up enough, the embryo might not develop. A female brown bear's milk is very rich in fat and calories, so the cub grows quickly. Nearly half of all brown bear cubs born are likely to die before they're a year old. Some die of disease, and others die of starvation. Predators such as wolves, mountain lions, and adult male bears—even a cub's own father—are threats, especially to cubs that are separated from their mothers. But mother brown bears are fiercely protective, so many cubs do survive. Cubs live with their mothers for up to three years, and then they're usually ready to face life on their own.
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QUICK FACTS Grizzly bears are actually brown bears, but are often considered a subspecies: Ursus arctos horribilis. Brown bears are found in northern North America, Europe, and Asia, in isolated areas that are undeveloped by humans. Brown bear cubs depend on their mother's milk for the first year of life. In North America, most brown bears live in the western provinces of Canada and in Alaska. Smaller populations live in Wyoming, Montana, Idaho, and Washington. Male brown bears average about 700 pounds (318 kilograms). Females average about 350 pounds (159 kilograms). Standing upright on its hind legs, an average-sized male brown bear may reach seven feet (two meters). When a grizzly bear stands on its hind legs, it is not doing so as a threat. It's curious, trying to get a better view of its surroundings. Because Brown bears eat alot of food to gain wieght. They weigh more right before hibernation than they do at the end of the winter sleep. Brown bears are often called grizzly bears because the tips of the hair on many of them is grayish, or grizzled. Large, well-developed shoulder muscles and big, long, strong claws allow the brown bear to dig up roots to eat, rip apart logs for grubs, and hollow out dens for hibernation. Grizzlies, or brown bears, eat mostly vegetation. They supplement their diets with the meat of animals such as fish and small mammals, when it's available. Brown bear habitat includes forested mountains, meadows, and river valleys.
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How to draw a cartoon BEAR, Tyler the Bear®™ with www.webbywanda.com, webbywanda.tv, webbywanda inc. All Copyrights reserved 2012© |
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