Polar Bears :: essays research papers

arctic features atomic number 18 big, pureness bears (sometimes darker fur) that live in very cold regions like around the artic poles. at that place are 21,000 to 28,000 gelid bears alive that are know. frigid bears swim in water and are carnivores, they take in fish . Polar bears feed principally on ringed seals and bearded seals. Depending upon their location, they also eat harp and hooded seals and eat carcasses of beluga whales, walruses, narwhals, and Bowhead whales.A polar bears stomach throne confine up to 15% to 20% of its body weight. It can use 84% of the protein and 97% of the fat it eats.Polar bears need about 2 kg (4.4 lb.) of fat per day to survive. A ringed seal weighing 55 kg (121 lb.) could provide up to eight days of energy for a polar bear. On cold days polar bears curl up and cover their muzzle area. During the winter, some polar bears leave their dens and find new(prenominal) places to stay warm. They may use these shelters for several months at a t ime.Polar bears generally walk with a steady, clumsy walk. The front paws swing towards the sides with distributively step, landing slightly pigeon-toed. The head swings from side to side. The walk has a four-beat pattern, commencement the right front foot touches the ground, past the left back foot, then the left front foot, and lastly, the right back foot.Humans may admit polar bears wherever human and polar bear habitats come together. Polar bear attacks occur most often at sites of human campsite where they fish and hunt or in towns close by polars habitat. Compared to new(prenominal) bears, polar bears are more willing to consider humans as prey. Most likely the person attacked is pull downed, unless the polar bear is killed first.Polar bears can live up to 20 to 30 years, but only a few of the polar bears live past 15 to 18 years. The oldest known polar bear in the Arctic lived 32 years. And the oldest polar bear in a zoo lived 41 years.Adult polar bears catch no natur al predators. Males sometimes kill other males competing for mates. Males rarely kill females protecting cubs. Cubs less than one year old sometimes are prey to adult male polar bears and other meat eaters, such as wolves. Newborn cubs may be killed by mothers that are hungry.Polar bears have been hunted for thousands of years.