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Male polar bears also have proportionally larger heads than females. [34] The weight of polar bears fluctuates during the year, as they can bulk up on fat and increase their mass by 50 percent. [31] A fattened, pregnant female can weigh as much as 500 kg (1,100 lb). [35] Adults may stand 130–160 cm (4.3–5.2 ft) tall at the shoulder.
An average adult male measures 244 cm (8 ft 0 in) in length, and stands 133 cm (4 ft 4 in) tall at the shoulder. The largest recorded wild male weighed 751 kg (1,656 lb), and had a hind foot measurement of 46 cm (18 in). [12] A large male Kodiak bear stands up to 1.5 m (4.9 ft) tall at the shoulder when it is standing on all four legs.
Ursus is a genus in the family Ursidae that includes the widely distributed brown bear, [3] the polar bear, [4] the American black bear, and the Asian black bear. The name is derived from the Latin ursus, meaning bear. [5] [6]
Polar bear fur is not actually white, but rather clear and hollow, the better to insulate them in icy waters and help them stay afloat. When exposed to the sun, these tubular hairs yellow slightly.
A male walrus is relaxing by the water's edge. Suddenly, a hungry male polar bear comes by to attack the walrus. Startled and nervous, the walrus heads straight for the sea. The bear attempts to bite and scratch the walrus, but the pinniped's thick skin is too much, even for a large bear like itself.
Polar bear feeding on a seal on an ice floe north of Svalbard, Norway. It is the most carnivorous species. The sloth bear is not as specialized as polar bears and the panda, has lost several front teeth usually seen in bears, and developed a long, suctioning tongue to feed on the ants, termites, and other burrowing insects
A man has been seriously injured after trying to prevent a polar bear from attacking his wife in northern Ontario, Canada. On Tuesday, Dec. 3, before 5 a.m. local time, an adult male and an adult ...
To remove the algae, the zoo first sprayed the two bears with hydrogen peroxide. [11] That same year in 2004, controversies started over the polar bear enclosure at the zoo and Inuka and Sheba's behaviour. The enclosure was a mere size of 391 m 2 compared to its huge Arctic habitat which can spread an area of over 80,000 km 2.