Narrator: That's right, fat. Each hump can store up to 36 kilograms ... when the ancestors to modern camels were hanging out in the Arctic tundra. Hare: Talking about the Ice Age, when a lot ...

Arctic hares are agile and easily maneuver the rocky ... A thick layer of blubber (fat) acts as insulation, keeping them warm. The extra fat also serves as energy reserves for when food is scarce.