Polar Bears Essay

Is a polar bear one of the eight species? A polar bear is a one of the eight species. “Scientists believe that the polar bear began over 200,000 years ago. They came from the brown bears ancestors.” Most experts think that polar bears are the longest bears. Males measure over 10 feet long, when standing on their hind legs, other bear not so much. Brown bears and polar bear are the largest and are both land carnivores. Polar bears are one of the worlds largest world predictors.

2.) Polar bears don’t hibernate! Polar bears don’t hibernate, expect if it is a pregnant female that hibernates over-winter in dens. Unlike other bears like brown, black, grizzle, polar bears don’t hibernate. Others may just dig a hole and spend several days in the hole, at a time. When the pregnant female’s activity level decreases, she gives birth and nurses her cubs. When the weather conditions are rough, they might stay in longer. Polar bears are evolved to live in cold climates unlike brown bears 3.) Is a Polar Bear's fur really white?

There fur is actually clear, hollow tubes filled with air. “An outer coat of long guard hair that sticks together when wet protects a dense, thick under coat.” When a polar bear rolls, water rolls off of the guards hairs. “Scarring or residue on the fur can cause the “white” fur to appear to human eyes as cream colored, yellow, or even pink in the Arctic light.” A polar bears fur may look white, but it is actually clear because each hollow hair reflects the light. On warm or sunny day it traps the suns infrared heat and keeps the bear warm at 98 degrees fahrenheit. Underneath the bears fur, the skin is actually black but soaks up all the suns heat and it helps them stay