The polar bear is part of the Arctic ecosystem and a food web through which carbon cycles. The ecosystem comprises phytoplankton, algae, a variety of animals and the natural environment. More »

www.reference.com Pets & Animals Mammals Bears

Polar bears sleep on the open ground, dig pits in gravel and sand at shorelines, or dig shallow areas in the snow or beneath protected ridges. Once inside these protective depressions, they turn their backs to the wind. More »

Polar bear predators include humans and other polar bears. Polar bear cubs are also prey to wolves. While polar bears are not prey to walruses, the animals do pose a threat to the bears as rivals on the food chain, parti... More »

www.reference.com Pets & Animals Mammals Bears

The adult polar bear is considered the top of the arctic food chain, with its only predators being other polar bears and humans. There is an increasing amount of polar bear cannibalism due to a lack of other foods to mee... More »

The average weight of an adult male polar bear is 1,543 pounds while an adult female is half that size and weighs up to 1,000 pounds. The largest polar bear ever recorded weighed 2,219 pounds and was found in Alaska in 1... More »

The scientific classification of the polar bear is in the kingdom Animalia, phylum Chordata, class Mammalia, order Carnivora, family Ursidae, genus Ursus and species maritimus. The polar bear's binomial name is Ursus mar... More »

The average polar bear is much larger than the average brown bear. Polar bears are considered the largest living carnivores on land, and large males often weigh more than a thousand pounds. Grizzly bears are actually a k... More »