Grizzly 399 (born 1996) is a grizzly bear inhabiting Grand Teton National Park and Bridger-Teton National Forest. She is followed by as many as 40 wildlife photographers, and millions of tourists come to the Greater Yellowstone Ecosystem to see her and the other grizzly bears. Grizzly 399 is the most famous brown bear mother in the world, with her own Facebook and Twitter accounts.