How big are grizzly bears? Are they different from the brown and kodiak bears of Alaska?
Source: Frequently Asked QuestionsThe average spring weight of an adult male bear in the Rockies is 350-400 pounds; a female weighs about 250 pounds. A grizzly may gain 50-100+ pounds during the summer and fall. Brown and Kodiak bears are the same species as our grizzly bears, but they are much larger as a result of their richer food source and the dominance of larger bears in breeding.