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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 species is sexually dimorphic, as adult females ...
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.
Berlin Zoological Garden. Knut (German pronunciation: [ˈknuːt] ⓘ; 5 December 2006 – 19 March 2011) was an orphaned polar bear born in captivity at the Berlin Zoological Garden. Rejected by his mother at birth, he was raised by zookeepers. He was the first polar bear cub to survive past infancy at the Berlin Zoo in more than 30 years.
Polar bears can eat up to 45kg of blubber in one sitting. These bears have a powerful sense of smell and can sniff out prey from up to 16km away.
The Tibetan brown bear (Ursus arctos pruinosus), also known as Tibetan blue bear, [2] is a subspecies of the brown bear (Ursus arctos) in the eastern Tibetan Plateau. One of the rarest subspecies of bear in the world, the blue bear is rarely sighted in the wild. First classified in 1851, it was once known in the Western world only through a ...
An isolated group of polar bears living in southeast Greenland has surprised scientists with its ability to survive in a habitat with relatively little sea ice. Polar bears face existential threat ...
A grizzly–polar-bear-hybrid (also named grolar bear, pizzly bear, zebra bear, [1][2] 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 ...
The glacier bear (Ursus americanus emmonsii), sometimes referred to as the "blue bear", is a subspecies of American black bear with silver-blue or gray hair endemic from Southeast Alaska, to the extreme northwestern tip of British Columbia, and to the extreme southwest of the Yukon. [2][3] The Tlingit name for the glacier bear is a reference to ...