A male walrus, called a bull, will typically weigh around two tons. A female walrus, called a cow, will typically weigh around one ton. The weight of individual walruses does depend on how much they eat.
How much a walrus weighs depends on the gender of the walrus. A male walrus, also called a bull, can weigh two tons. A female walrus, also called a cow, can weigh one ton. You can find more information here: http://library.thinkquest.org/3500/walrus.html