MIGRATION: Some polar bears make extensive north-south migrations in response to ice packs receding northward in the spring and advancing southward in the fall. In addition, individuals may travel vast distances to find mates or food and have been seen 100 miles from the nearest land- or icefall.
Do polar bears migrate or hibernate?
They emerge from their den in the spring when food is available. Polar bears do not hibernate. Only pregnant polar bears den. Unlike hibernation, a polar bear’s heart rate and temperate do not decrease, this ensures the cubs will stay warm.
Why are polar bears migrating south?
Polar bears are moving further south into communities because they’re adopting new hunting practices. If the sea-ice isn’t forming, they can’t hunt on it. If they can’t hunt on the ice, they can’t hunt seals, which forces them to look for new food sources.
Where do polar bears go in the winter?
On cold days polar bears curl up and often cover their muzzle area. During the winter, some polar bears excavate temporary dens or find natural shelters to stay warm. They may use these shelters for several months at a time.
Do polar bears eat humans?
Bears. Polar bears, particularly young and undernourished ones will hunt people for food. … Truly man-eating bear attacks are uncommon, but are known to occur when the animals are diseased or natural prey is scarce, often leading them to attack and eat anything they are able to kill.
Do polar bears eat penguins?
Polar bears do not eat penguins, since penguins live in the southern hemisphere and polar bears live in the northern hemisphere.
What is the highest temperature a polar bear can live in?
The warmest areas in summer are inland regions of Siberia, Alaska, and Canada where temperatures can reach as high as 32°C (90°F). The ocean temperatures in the Arctic are about -1.5°C (29°F) in summer.
Can a polar bear survive in warm weather?
Summary: Polar bears are not likely to survive in a warmer world, biologists report. As polar bears lose habitat due to global warming, these biologists say, they will be forced southward in search of alternative sources of food, where they will increasingly come into competition with grizzly bears.
Can a bear breed with a dog?
While they may look similar, there’s not a direct relationship between bears and dogs. The two can’t breed to create a new hybrid animal, which debunks a common myth about their relationship. In fact, the two animals don’t even share the same number of chromosomes.
Can polar bears survive further south?
Polar bears live in the Arctic, but not Antarctica. Down south in Antarctica you’ll find penguins, seals, whales and all kinds of seabirds, but never polar bears. Even though the north and south polar regions both have lots of snow and ice, polar bears stick to the north. … Polar bears don’t live in Antarctica.