Polar Bears are on 4 different episodes, and are #4 on Survivors, #6 on Fighters, #7 on Moms, and #8 on Predators. They hibernate under ground the entire winter just like most bears, in the arctic. They don't answer the call of nature not once. They don't eat, or go to the toilet. They even give birth in their sleep. When they are awake, they hunt seals under the ice during the winter. They can use their sense of smell to sniff them out. However, in the spring they mostly eat plants more often. However, what they can do is fight. Polar bears will fight other polar bears to see who is dominate.