POLAR BEAR
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The polar bear is a hypercarnivorous bear whose native range lies largely within the Arctic Circle. A boar (adult male) weighs around 350–700 kg. Although most polar bears are born on land, they spend most of their time on the sea ice.
Because of their dependence on the sea ice, polar bears are classified as marine mammals. It is the only living marine mammal with powerful, large limbs and feet that allow them to cover miles on foot and run on land.
Compared with its closest relative, the brown bear, the polar bear has a more elongated body build and a longer skull and nose; the legs are stocky and the ears and tail are small.
The 42 teeth of a polar bear reflect its highly carnivorous diet. The cheek teeth are smaller and more jagged than in the brown bear, and the canines are larger and sharper. The polar bear has an extremely well developed sense of smell, being able to detect seals nearly 1.6 km.
Because of their dependence on the sea ice, polar bears are classified as marine mammals. It is the only living marine mammal with powerful, large limbs and feet that allow them to cover miles on foot and run on land.
Compared with its closest relative, the brown bear, the polar bear has a more elongated body build and a longer skull and nose; the legs are stocky and the ears and tail are small.
The 42 teeth of a polar bear reflect its highly carnivorous diet. The cheek teeth are smaller and more jagged than in the brown bear, and the canines are larger and sharper. The polar bear has an extremely well developed sense of smell, being able to detect seals nearly 1.6 km.
ATTACKING SKILS
Polar bears are very skilled hunters. Seals targeted as prey are usually not aware there is a polar bear in the vicinity until it attacks.
Although polar bears are masters of still hunting, they can reach speeds of 25 mph for short bursts. A polar bear approaches a seal quietly, then charges when he's within 50 to 100 feet of the seal. For this short distance, he can move so fast the seal doesn't have much time to react and reach the safety of the water.
Although polar bears are masters of still hunting, they can reach speeds of 25 mph for short bursts. A polar bear approaches a seal quietly, then charges when he's within 50 to 100 feet of the seal. For this short distance, he can move so fast the seal doesn't have much time to react and reach the safety of the water.
DIET
Polar bears feed mainly on ringed and bearded seals. Depending upon their location, they also eat harp and hooded seals and scavenge on carcasses of beluga whales, walruses, narwhals, and bowhead whales. On occasion, polar bears kill beluga whales and young walruses.
When other food is unavailable, polar bears will eat just about any animal they can get, including reindeer, small rodents, seabirds, waterfowl, fish, eggs, vegetation (including kelp), berries, and human garbage.
LIFESPAN
Polar bears can live 20 to 30 years, but only a small percentage of polar bears live past 15 to 18 years.
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