As babies, walruses can gain about 1 kilogram (2 lbs) every day. Males grow to be larger than the females, and their tusks-which are their canine teeth-can reach lengths of 1 meter (3 ft 3 in). Males wield these tusks in fights for dominance, but females have them too, and both sexes use them to hoist themselves out of the water.
Key Facts In This Video
When there isn't enough ice in the Arctic Circle, thousands of walruses swim to Alaska instead. 00:24
Walruses use their tusks to haul themselves out of the water and make breathing holes in ice. 01:41
Walrus mustaches aren't made of hair—they consist of specialized organs called mustacial vibrissae. 03:08
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