Is a Polar Bear Bigger than a Grizzly Bear? - Polar Bear Grizzly Bear • PolarBearFacts.net
In grizzly bears, the adult females weigh around 130–180 kg (290–400 lb) while female polar bears average 150–250 kg (331–551 lb). There seems to be no significant difference in the weight of grizzly female and polar bear female. Let's see how is a polar bear bigger than a grizzly bear if it really is.