Brown bears are technically carnivores, but in practice most of their diet consists of plant material such as reeds, grasses, bulbs, seeds, berries and roots. They also eat insects, fish and small mammals. Some of these bears have even developed predatory practices of large animals, including moose, caribou and elk.
The polar bear is a great hunter of seals. Most carnivorous of bears, also the most patient. They will sit near a blow seal hole for hours, waiting until the animal surfaces. When it does, it's all for the seal. A hard blow to the leg brings a quick meal for the bear and one death fast for the label.
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The north polar conditions are harsh, with temperatures well below freezing almost constantly. In order to survive, the polar bear have to be a survivor of experts capable of dealing with the harsh conditions of their environment. Like a giant solar panel, the black bear skin to draw every bit of heat possible sunlight. The hair if the skin appears white, but actually they are translucent and transmit light to the skin. Beneath These hairs are "underhairs" orange or yellow.
Like other bears, polar bears ears are round. They are, however, smaller and closer head. This, together with the general shape of the animal will help to make it a formidable swimmer. The feet are large, and slightly webbed, which also contribute to the bear \ 's skills as a swimmer.
There is a high degree of sexual dimorphism among bears too. The males are huge, the largest of which weighs as much as 1300 lbs. The females are smaller, the largest of which only about 600 pounds.
The boar usually do not hibernate but remain active during most of the year. Pregnant women are the exception to this, however. They go through a den and the period of hibernation, like that of the black bears, brown, and others.
Polar bears are more aggressive than other bears. Even in captivity.
The Asiatic black bear has many similarities to its American cousin. Both are medium sized and black. Asian bear ears are large in size and seem inappropriate for the rest of the head and other bears. These bears have a white patch of skin on the chest, which is often V-shaped, with some variable amount of white on her chin too. May occasionally be found in a brown phase.
Asiatic black bears are not as studied as other bears, so little information available about its relative size and other statistics. It is generally found to be 50-75 inches long. Males usually weigh 220-440 kilos, and females 110-275 kg.
These bears can be found throughout South Asia. They are known in Afghanistan, Pakistan, Nepal, Sikkim, northern India, Bhutan, and Burma. You can also find in northeast China and southeast Russia, Taiwan, Japan and the islands of Honshu and Shikoku. Most of these bears live in forested areas, especially in hills and mountains places. Elevations favorite seasonal change. In summer, Asiatic black bears have been sighted in more than 9,900 feet - to move to lower elevations as winter's cold lights. In the northern part of its range, the den for the winter. Current thinking is that the bears in the far south do not hibernate.
The Asiatic black bear's diet is very diverse. They feed on carrion bee \ 's nest, insects, invertebrates, small vertibrates, and fruits. They have been known to kill pets, but to what extent are presented this predation is not known. They are also known to feed on loungers and nut trees support platforms
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