The life expectancy of a polar bear living in its natural habitat is 15 to 18 years. A polar bear living in captivity can live to be 30 years old.
The oldest polar bear living in the wild died at age 32. The oldest polar bear living in captivity was a female who died at age 43 in 1991. Polar bears die of starvation when they become unable to hunt because they are too old or are hurt due to fights or accidents. Some that are hurt may die from their injuries. Scientists are unable to research their causes of death because carcasses of dead polar bears are rarely found in their natural habitats.Learn More
As the largest land predators alive in the world as of 2014, most adult polars bears in the wild weigh between 900 and 1600 pounds and are from 7.25 to 8 feet long. Females are smaller than males, even in the later stages of gestation.Full Answer >
Albino polar bears would differ from normal polar bears by having pink eyes, skin, noses and gums. To be an albino, a polar bear would need to inherit two copies of a recessive gene that interferes with the production of tyrosinase â€” an enzyme involved in the production of melanin.Full Answer >
A polar bear can run 18.6 miles per hour. It is the slowest of the bear species but is ranked as the largest land carnivore in the world, which may account for its lack of speed.Full Answer >
The skin of a polar bear is black, so a shaved polar bear is completely black. The skin has a layer of fat underneath that measures as much as 4.5 inches thick. This fat keeps polar bears warm while swimming since wet fur doesn't insulate well.Full Answer >