As of July 31, grizzly bears in Yellowstone National Park are no longer considered threatened. Grizzlies are large, brown bears that live in North America. Male grizzlies weigh over 200 kilograms, while the females weigh less than 200 kilograms. They are about two meters long. Grizzlies once lived across much of North America. There were tens of thousands of them. They can be found in Alaska, Canada and across the northwestern United States, including in Yellowstone. The park is made up of more than 8,900 square kilometers of land in Wyoming, Montana and Idaho. About 40 years ago, scientists estimated that fewer than 150 bears remained in Yellowstone National Park. After that estimate, Yellowstone grizzlies were added to the “threatened” list under the Endangered Species Act. The Interagency Grizzly Bear Study team recently determined there are now about 700 bears in the park.