Search results
Results from the WOW.Com Content Network
Arctic foxes form monogamous pairs during the breeding season and they stay together to raise their young in complex underground dens. Occasionally, other family members may assist in raising their young. Natural predators of the Arctic fox are golden eagles, [12] Arctic wolves, polar bears, [13] wolverines, red foxes, and grizzly bears. [14] [15]
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).
Family Ursidae (bears) is the largest of all the land caniforms. Eight species are recognized, divided into five genera. They range from the large polar bear (350–680 kilograms (770–1,500 lb) in males) to the small sun bear (30–60 kilograms (66–132 lb) in males) and from the endangered giant panda to the very common black bear. Common ...
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 They are strong swimmers and have been spotted up to ...
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 ...
Overall, it shows that it's unlikely polar bears can adapt to living on land, Derocher said. When polar bears have sea ice, they feast on seals. Not just the seals, but their fat. About 70% of the polar bear diet while on ice is fat, said study co-author Karyn Rode, a USGS wildlife biologist.
During the summer, Arctic foxes feed mainly on small animals, but during the winter foxes often venture onto sea ice to eat seal carcasses left by polar bears. Arctic foxes are sometimes trapped for fur; the fur trade is important to many coastal Native villages, though demand for Arctic fox fur has decreased in recent years. [15]
Ringed seal pups are especially vulnerable, and make easy kills for polar bears. Analysis of fatty acid signatures found that ringed seals are the predominant prey species for polar bears. [7] While the ice lairs provide some protection, Arctic foxes are also a threat, as the foxes can enter the birth lairs and eat the pups. They will also eat ...