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Polar bear

It is the largest extant bear species, as well as the largest extant land carnivore. A boar (adult male) weighs around 350–700 kg (770–1,540 lb), while a sow (adult female) is about half that size.

U.S. Fish and Wildlife Service

Because of expected habitat loss caused by climate change, the polar bear is classified as a vulnerable species.

Schliebe, Scott

The bear family, Ursidae, is thought to have split from other carnivorans about 38 million years ago.

AWeith