A lazy moment in the life of a polar bear at at the Oregon Zoo. I am going to Churchill next year to see these beautiful animals out on the tundra. There has been a 13% decrease in the Polar bears in that area due to global warming. There is only a short time during the year for viewing these bears, as once the ice solidifies, they migrate in search of food. During the several month hibernation, they have had no food. They replenish their bodies off of seals and other sea going mammals. The polar bears are considered the most dangerous of all bears. While viewing them in their natural habitat, you never leave the gigantic dune buggies. For several days and nights, you sleep, eat and view the wildlife from the dune buggies and from the viewing decks. The bears are considered to be too dangerous to allow people to step down on the tundra (other than the scientists).