Yellowstone is one of the most visited national parks in the United States. 97% of Teton County, where Jackson Hole and the Southern half of Yellowstone are located, is divided into protected national parks, national forests and wildlife refuges. Yellowstone and the surrounding areas comprise the largest intact natural ecosystem in the lower 48 states and the park houses wildlife such as wolfs, various kinds of bears, deer and bison that are especially interesting to visitors. Jackson Hole & Yellowstone was one of the first destinations to adopt sustainability standards in its management and it successfully continues to do so.