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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).
The key danger for polar bears posed by the effects of climate change is malnutrition or starvation due to habitat loss.Polar bears hunt seals from a platform of sea ice. Rising temperatures cause the sea ice to melt earlier in the year, driving the bears to shore before they have built sufficient fat reserves to survive the period of scarce food in the late summer and early fall.
Victoria is the oldest of four polar bears kept at the Highland Wildlife Park in the Cairngorms National Park. At the grand old age of 28 her keepers say she has reached the stage in her life when ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 27 November 2024. Animal that can eat and survive on both plants and animals This article is about the biological concept. For the record label, see Omnivore Recordings. Examples of omnivores. From left to right: humans, dogs, pigs, channel catfish, American crows, gravel ant Among birds, the hooded crow ...
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]
Ringed seal and bearded seal are the most crucial aspect of an Inuit diet and is often the largest part of an Inuk 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.
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 ...
Brown bears and polar bears continued to remain isolated for a long period of time, theorized due to the presence of ice, before recent changes allowed polar bears and brown bears to interbreed again. [9] [10] It is estimated that polar bears and brown bears began to interbreed again about 160,000 years ago. The study shows that previous ...