【How-to】Why do walrus jump off cliff

Which is bigger, a polar bear or a walrus? A mature male polar bear (Ursus maritimus) can weigh more than 700 kg (1,500 lb), making it one of the largest land carnivores on Earth. … An adult male walrus (Odobenus rosmarus) can weigh more than 2,000 kg (4,400 lb), about three times as much as a polar bear.