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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).
Bear habitats are generally forests, though some species can be found in grassland and savana regions, and the polar bear lives in arctic and aquatic habitats. Most bears are 1.2–2 m (4–7 ft) long, plus a 3–20 cm (1–8 in) tail, though the polar bear is 2.2–2.44 m (7–8 ft) long, and some subspecies of brown bear can be up to 2.8 m (9 ...
In fact, the World Wide Fund for Nature (or WWF) estimates that there are only 22,000 to 31,000 polar bears left in the world. Since the 1960s, world leaders from the various habitats that polar ...
Polar bears were hunted heavily in Svalbard, Norway throughout the 19th century and to as recently as 1973, when the conservation treaty was signed. 900 bears a year were harvested in the 1920s and after World War II, there were as many as 400–500 harvested annually.
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.
By contrast, polar bears have few parasites; many parasitic species need a secondary, usually terrestrial, host, and the polar bear's life style is such that few alternative hosts exist in their environment.
As many as 100,000 black bears live in Alaska. [9] Polar bear. Polar bears on the Beaufort Sea coast. ... There are two main polar bear populations in Alaska.
The latter bear, from Western Russia, reportedly measured just under 2.5 m (8 ft 2 in) in head-and-body length. [62] An Ussuri brown bear of Hokkaido, a relatively small-bodied population, in the snow. In Eurasia, the size of bears roughly increases from the west to the east, with the largest bears there native to Eastern Russia. [63]