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Polar bear. 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 species is sexually dimorphic, as ...
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.
Susan J. Crockford. Susan Janet Crockford is a Canadian zoologist and climate change denialist known for her research and publications on polar bears. From 2004 to 2019 she was an adjunct professor in Anthropology at the University of Victoria. [1]
But the lack of consistent estimates of population trends and survival rates for some polar bear subpopulations, which are distributed over a very large geographic area with differences in sea ice ...
A grizzly-polar-bear-hybrid (also named grolar bear, pizzly bear, zebra bear, [1][2] polizzy, grizzlar, or nanulak) is a rare ursid hybrid that has occurred both in captivity and in the wild. In 2006, the occurrence of this hybrid in nature was confirmed by testing the DNA of a unique-looking bear who had been shot near Sachs Harbour, Northwest ...
Ursus (mammal) Ursus. (mammal) Ursus is a genus in the family Ursidae (bears) 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]
The polar bear species is declining because of disappearing Arctic sea ice. In 2021, scientists in Norway found polar bears were inbreeding as the species fights to survive.
Arctic fox. The Arctic fox (Vulpes lagopus), also known as the white fox, polar fox, or snow fox, is a small species of fox native to the Arctic regions of the Northern Hemisphere and common throughout the Arctic tundra biome. [1][8][9][10] It is well adapted to living in cold environments, and is best known for its thick, warm fur that is also ...