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polar bear description

Sinopsis

A polar bear might catch only one or two out of 10 seals it hunts, depending on the time of year and other variables. Due to the absence of human development in its remote habitat, it retains more of its original range than any other extant carnivore. Mother polar bears usually give birth to one to three cubs at a time. Males weigh 900–1,600 pounds (410–720 kilograms). Save 30% off a Britannica Premium subscription and gain access to exclusive content. For other uses, see, 10.2305/IUCN.UK.2015-4.RLTS.T22823A14871490.en, https://simple.wikipedia.org/w/index.php?title=Polar_bear&oldid=7234614, Беларуская (тарашкевіца)‎, Srpskohrvatski / српскохрватски, Creative Commons Attribution/Share-Alike License. Polar bears are also the largest species of bear. Both male and female polar bears live to be as much as 30 years old (in a zoo). This page was last changed on 30 December 2020, at 02:18. Young remain with their mothers until they reach sexual maturity. It has no natural predators and knows no fear of humans, making it an extremely dangerous animal. Although polar bear meat is consumed by aboriginals, the liver is inedible and often poisonous because of its high vitamin A content. When two polar bears meet, they have a special way of greeting each other. The bear stalks seals resting on the ice, ambushes them near breathing holes, and digs young seals from snow shelters where they are born. They circle around each other for a while, grunting. While adult polar bears are perfectly insulated by the dense white fur, baby polar bears develop lighter furs in the initial days following the birth. The polar bear (Ursus maritimus) is a large bear which lives in the Arctic. Ring in the new year with a Britannica Membership - Now 30% off. It is also called white bear or northern bear. Polar bear is also called arctic bear or white bear. It has no natural predators and knows no fear of humans, making it an extremely dangerous animal. The fur keeps them very warm. Polar bears are similar in size to a normal bear but have a slimmer neck, longer legs and fur. The polar bear or the sea/ice bear are the world's largest land predators. The Inuit gave thanks and respect in turn. This fauna, together with the vegetation that feeds the lemming, ptarmigan, and caribou, forms a tight ecological…. It grows to about 1.6 metres (5.3 feet) tall at the shoulder and 2.2–2.5 metres in length. The polar bear's liver contains a lot of vitamin A. They can be up to 250cm long and 160cm tall and weigh up to 600kg. Except for one subspecies of grizzly bear, the polar bear is the largest and most powerful carnivore on land. The weight of an adult male is estimated at 1760 lbs (800 kg). The male, which is much larger than the female, weighs 410 to 720 kg (900 to 1,600 pounds). Except for one subspecies of grizzly bear, the polar bear is the largest and most powerful carnivore on land. Models developed by some scientists predict an increase in polar bear starvation as a result of longer ice-free seasons and a decline in mating success, since sea-ice fragmentation could reduce encounter rates between males and females. Then they use their claws to slowly push themselves across the ice.[8]. They can be found in the Artic, the U.S. (Alaska), Canada, Russia, Denmark (Greenland), and Norway. Young polar bears may die of starvation or may be killed by adult males, and for this reason female polar bears are extremely defensive of their young when adult males are present. But they cannot live on their own. The muzzle is elongated with a "Roman-nosed" (slightly arched) snout. Then, he swaggers along, growling, to scare off his rival. Polar bear males are larger than females. A polar bear learns the seasonal pattern of movements as a cub during the 2 years it remains with its mother (Stirling and Guravich 1990, p 68). Polar bears are apex predators. For bears, height is usually measured at the shoulder when the animal is on all fours, according to Polar Bear International. The polar bear eats seals, fish and fruits (berries). The bear spends more than half of its life in water which is why it is also called marine mammal. Polar bears have 42 teeth, which they use for catching food and for aggressive behavior. No, polar bears are not an endangered species, but they are threatened. Adult polar bears have no natural predators, though walruses and wolves can kill them. A polar bear is a great white northern bear (family Ursidae) found throughout the Arctic region. [4], As adults, male bears fight with each other over a female each male fluffs out his coat of fur to make himself look bigger. Polar bears are the largest carnivorous land mammals on Earth. These rules help keep the polar bear population where its at today. A polar bear's head is oblong and relatively small compared to body size. They eat the ringed seal as well as the bearded seal and other pinnipeds. They begin to learn to hunt and swim. Lengthwise, they are 7.25 to 8 feet (2.2 to 2.5 m) from head to rump. The polar bear (Ursus maritimus) is a large bear which lives in the Arctic. Wildscreen's Arkive project was launched in 2003 and grew to become the world's biggest encyclopaedia of life on Earth. Laws have been passed in many areas of the world to protect bears from hunters and the destruction of their habitat. Description. Internationally, they are listed as a vulnerable species by the IUCN. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. After a hunt, they held a celebration that lasted for several days. It has black skin under the white fur. Adult females are smaller, normally weighing 150 to 290 kilograms (330 to 650 pounds). Each of these countries either banned hunting or established rules for how many polar bears could be … Model forecasts by the U.S. Geological Survey suggest that habitat loss may cause polar bear populations to decline by two-thirds by the year 2050. People think polar bears can become 25–30 years old in nature, but in captivity (for example, in zoos), they can become up to 45 years old. [30] Adult polar bears can measure over 2.5m long and weigh around 680kg. Polar Bear Description. Elongated body and face to prevent them from cold if they get wet sea/ice bear are the largest ever standing. Largest land predators and gain access to exclusive content and 2.2–2.5 metres in length and weigh 330 to 660 (... More of its high vitamin a a Red Data Book species, a baby polar bear in. Measuring 12 in 's paws are perfect snowshoes for them from head to rump for gaining,... Breed every two to four years thereafter they can kill them in Russia, polar bears stocky! 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