Adult polar bears have no natural predators, though walruses and wolves can kill them. Longevity in the wild is 25 to 30 years, but in captivity several polar bears have lived to more than 35 years old. Polar bear with cubs (Ursus maritimus). Between April and late June, as the snow starts to melt and days become longer, adult male polar bears begin to find mates on the sea ice by following scented trails left by footpads. Males reach sexual maturity between ages six and ten, and females between ages four and six.
Polar bear paws are ideal for roaming the Arctic. Adult males normally weight to more than kilograms ( to more than 1, pounds). Adult females are smaller, normally weighing to kilograms ( to pounds). Researchers in Canada estimated one . Adult polar bears are solitary, but not anti-social: they actively seek mating partners in the late spring and early summer. Males seek out females by following their scent. Two males may fight over a female. Polar bears couples are only together for about a week before they separate. The male may then seek out another mate (a behaviour known.
Sep 10, · Polar bears live in one of the planet's coldest environments and depend on a thick coat of insulated fur, which covers a warming layer of fat. Fur even grows on the bottom of . Polar bears are the top predator in the Arctic marine ecosystem. Because the polar bear's body requires a diet based on large amounts of seal fat, it is the most carnivorous member of the bear family. Food can be hard to come by for polar bears for much of the year.
Adult polar bear males weigh up to – kg (–1, lb) with the total length measuring around –3 metres (7 ft 10 in–9 ft 10 in). Mature females average – kg (– lb) in weight. She had a total length of – metres (5 ft 11 in–7 ft 10 in).