As the world’s largest terrestrial carnivore(陆地食肉动物)，the polar bear is the king of the great white north.Adult males can measure more than 9 feet in length and weigh between 770 and 1,430 pounds.The polar bear has a strong body while their heads are narrow with small，rounded ears. Polar bears can be found in northern Canada，Greenland，Norway and Russia，and there have been reports that polar bear tracks have been found as far north as the North Pole.The 5,000,000-square-mile range of the polar bear circles the Arctic and contains pieces of open water where seals are easily caught.

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