Search results
Results From The WOW.Com Content Network
Male polar bears also have proportionally larger heads than females. [34] The weight of polar bears fluctuates during the year, as they can bulk up on fat and increase their mass by 50 percent. [31] A fattened, pregnant female can weigh as much as 500 kg (1,100 lb). [35] Adults may stand 130–160 cm (4.3–5.2 ft) tall at the shoulder.
Do polar bears hibernate? The arctic mammal's sleep behavior, explained. The department receives more than 100 calls a year from homeowners in the Shasta County area reporting bear problems, with ...
[69] [83] The polar bear mainly preys on seals, stalking them from the ice or breaking into their dens. They primarily eat the highly digestible blubber. [84] [81] Large mammalian prey is typically killed with raw strength, including bites and paw swipes, and bears do not display the specialized killing methods of felids and canids. [85]
For many bears, winter means hibernate or die. Here's what they do to survive. Plus: how climate change puts newborn cubs in danger.
Bears and many other animals like skunks, raccoons, and even birds do go into a deep sleep - torpor - but for much shorter amounts of time; only up to a few hours or a day at most. As they sleep ...
Polar bears differ from black bears, grizzlies, and other bear species where both sexes hibernate in that only females use hibernacula. Like other female bears, polar bears use hibernacula as maternity dens. Also like other species, they tend to dig dens into the earth, although their Arctic hibernacula are usually covered with snow by the time ...
Hibernation is a state of minimal activity and metabolic depression undergone by some animal species. Hibernation is a seasonal heterothermy characterized by low body-temperature, slow breathing and heart-rate, and low metabolic rate. It is most commonly used to pass through winter months – called overwintering.
“For every 1°C (about 1.8°F) increase in winter minimum temperatures, bears reduced hibernation by an average of six days,” the study said. As a result, researchers said that bears are ...