The walrus is the only seal with tusks. A walrus defends itself from polar bears with its tusks. It also uses them as hooks when climbing onto ice. Walruses do not normally attack people. However, an angry, wounded walrus can injure a hunter or damage a boat with its tusks.
Walruses spend most of their time in herds.
During the mating season, male walruses make unusual bell-like sounds underwater. Walruses are mammals. A female walrus usually has one calf every other year and cares for her young for about two years. Twins are rare. Some walruses live as long as 40 years.