绿叶鸟网（www.lvyeniao.cn）原创整理的 > 考研英语作文 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 n yellow coats. To the north, the black bear is actually gray or white in color. Even in the same litter, both brown and black rred bears may be born.
Black bears are the allest of all American bears, ranging in len from five to six feet, weighing from three dred to five dred pounds Their eyes and ears are all and their eyesight and hearing are not as good as their sense of ell.
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 n 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 hibernate. Although the bear does not during the winter moths, sustaining itself from body fat, its temperature remains 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 dense thickets. A little of one to four cubs is born in January or February after a gestation period of six to nine months, and they remain with their mother until they are lly grown or about one and a half years old. Black bears can live as long as thirty years in the wild , and n longer in game preserves set aside for them.
