The Bear

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The polar bear (Ursus maritimus) is a carnivorous bear whose native range lies largely within the Arctic Circle, encompassing the Arctic Ocean, its surrounding seas and surrounding land masses. It is a large bear, approximately the same size as the omnivorous Kodiak bear. Although polar bears are born on land, they spend most of their time at sea. Their scientific name means "maritime bear", and derives from this fact.
The polar bear is perhaps unequaled by any other living land predator in its enormous physical power. It can kill an adult walrus which may be more than twice the bear's weight, and has up to 1-metre long ivory tusks that can be used as formidable weapons. A polar bear may charge a group of walruses, with the goal of separating a young, infirm, or injured walrus from the pod. They will even attack adult walruses when their diving holes have frozen over or intercept them before they can get back to the diving hole in the ice. Polar bears have also been seen to prey on beluga whale and narwhals.
[Wikipedia]