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American black bears
American black bears appear in a variety of colors despite their name. In the eastern part of their range, most of these brown, red, or even yellow coats. To the north, the black bear is actually gray or white in color. Even in the same litter, both brown and black furred bears may be born.
Black bears are the smallest of all American bears, ranging in length from five to six feet, weighing from three hundred to five hundred pounds Their eyes and ears are small and their eyesight and hearing are not as good as their sense of smell.
Like all bears, the black bear is timid, clumsy, and rarely dangerous , but if attacked, most can climb trees and cover ground at great speeds. When angry or frightened, it is a formidable enemy.
Black bears feed on leaves, herbs. Fruit, berries, insects, fish, and even larger animals. One of the most interesting characteristics of bears, including the black bear, is their winter sleep. Unlike squirrels, woodchucks, and many other woodland animals, bears do not actually hibernate1. Although the bear does not during the winter moths2, sustaining itself from body fat, its temperature remains3 almost normal, and it breathes regularly four or five times per minute.
Most black bears live alone, except during mating season. They prefer to live in caves, hollow logs, or dense4 thickets5. A little of one to four cubs6 is born in January or February after a gestation7 period of six to nine months, and they remain with their mother until they are fully8 grown or about one and a half years old. Black bears can live as long as thirty years in the wild , and even longer in game preserves set aside for them.
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1 hibernate | |
v.冬眠,蛰伏 | |
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2 moths | |
n.蛾( moth的名词复数 ) | |
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3 remains | |
n.剩余物,残留物;遗体,遗迹 | |
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4 dense | |
a.密集的,稠密的,浓密的;密度大的 | |
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5 thickets | |
n.灌木丛( thicket的名词复数 );丛状物 | |
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6 cubs | |
n.幼小的兽,不懂规矩的年轻人( cub的名词复数 ) | |
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7 gestation | |
n.怀孕;酝酿 | |
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8 fully | |
adv.完全地,全部地,彻底地;充分地 | |
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