Polar bears are the largest land carnivores. They can grow up to 10 feet long and weigh 1,700 pounds. Polar bears live in the Arctic regions of Alaska, Canada, Russia, Greenland, and Norway. They hunt seals in the water and can eat up to 150 pounds at once as their main diet. Polar bears communicate through growls, roars, and head wagging and live solitary lives outside of mother-cub groups.