Weight and Diet of Grizzly Bears

The average adult Grizzly can easily weigh in at 700 pounds or more. Male Grizzlies can range up to 1,700 pounds, while large females can weigh up to 800 pounds. The Kodiak Grizzlies, named for their home on Kodiak Island in Alaska, are a little larger and can weigh up to 2,000 pounds, although their average weight is often between 1200-1500 pounds, with the Kodiak Grizzly females ranging up to 1,000 pounds. This weight difference among these two types of grizzlies is due to their diet. The Kodiak Grizzly’s diet is very high in protein because the supply of Alaskan salmon is vast on Kodiak Island, providing a great source of food and calories.