In fact, their numbers storage during warming periods drastically increase. This is because the adult female generally has two cubs, and often eats one of them for food to sustain herself, and the strongest of the two cubs. It's a harsh world being a polar bear, but they are adapted to live in that environment. How arrogant is it for humans to believe that they can save or destroy the cute polar bears. It won't happen, and those cute little cute polar bears are some of the most ferocious and vicious animal predators on the planet. They will hunt down a pray and stock them for a 100 miles.