Odobenus rosmarus - BIO203


  • Odobenus rosmarus is the only member of the family Odobenidae (Boessenecker 2013)

  • Female walruses are called cows and the male walruses are called bulls (Riedman 1990)

  • Female walruses tend to choose their mate based on the visual and vocal displays the males perform (Riedman 1990)

  • Walruses display the most elaborate courtship of all pinnipeds prior to mating (Riedman 1990)

  • Walruses spend the majority of their lifetime either in, or near, water (Baker 2013)

  • Walruses live in a power system, with the oldest and strongest having the most power (Baker 2013)

  • Tusks of male walruses can weigh up to a total of ten pounds (Riedman 1990)

  • Walruses tend to stick together in very large groups, even when they are not mating (Riedman 1990)

  • Walrus tusks, on average, grow to about 50cm, but can reach up to 90cm (Baker 2013)

  • Walruses give birth only on land or ice, never in the water (Riedman 1990)

  • Walruses migrate north during the summer months, and south during the winter months (Baker 2013)

  • Females tend to care for their young for long periods of time which can be anywhere between one and four years (Riedman 1990)

  • Walruses are known to be one of the largest pinnipeds (Baker 2013)

  • Females enter into estrus again four months after giving birth (Riedman 1990)

  • The average lifespan of pinnipeds is between 15-20 years (Riedman 1990)

  • Walruses mostly consume bivalve mollusks which they dig up from the ocean floor (Baker 2013)image

  • Walruses dig big holes in the ocean floor in order to obtain their food (Kastelein 1988)

  • Walruses do not dig with their tusks, but with their front flippers (Kastelein 1988)

  • Walruses mainly inhabit the Arctic, Northern Pacific, and Northern Atlantic Oceans (Kastelein 1988)




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