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The polar bear (Ursus maritimus) is a large bear native to the Arctic and nearby areas. It is closely related to the brown bear, and the two species can interbreed.The polar bear is the largest extant species of bear and land carnivore, with adult males weighing 300–800 kg (660–1,760 lb).
Ringed seal and bearded seal are the most crucial aspect of an Inuit diet and is often the largest part of an Inuit hunter's diet. [3] Land mammals such as reindeer (caribou), polar bear, and muskox; Birds and their eggs; Saltwater and freshwater fish including sculpin, Arctic cod, Arctic char, capelin and lake trout.
The livers of polar bears, walruses, bearded seals, and huskies can contain very high levels of preformed vitamin A, [11] and their consumption has led to vitamin A poisoning (hypervitaminosis A) according to several anecdotal reports. It has been estimated that consumption of 500 grams of polar bear liver would result in a toxic dose for a ...
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Polar bears are classified as carnivores, both taxonomically (they are in the order Carnivora), and behaviorally (they subsist on a largely carnivorous diet). Depending on the species of bear, there is generally a preference for one class of food, as plants and animals are digested differently.
Other classes of carnivore are highly variable. The ursids (bears), for example: while the Arctic polar bear eats meat almost exclusively (more than 90% of its diet is meat), almost all other bear species are omnivorous, and one species, the giant panda, is nearly exclusively herbivorous. [3] Dietary carnivory is not a distinguishing trait of ...
There are 20 known sub-populations of polar bears across the Arctic. This is one of the most southerly and best studied. "They're our fat, white, hairy canaries in the coal mine," Alyssa explains.
Brown bears will also commonly consume animal matter, which in summer and autumn may regularly be in the form of insects, larvae such as grubs and including beehives.Most insects eaten are of the highly social variety found in colonial nests, which provide a likely greater quantity of food, although they will also tear apart rotten logs on the forest floor, turn over rocks or simply dig in ...