In this undated photo provided by Grand Teton National Park a grizzly bear known as No. 399 walks along side a cub. (C. Adams/Grand Teton National Park via AP)
In this undated photo provided by Grand Teton National Park a grizzly bear known as No. 399 stands along side a cub. (C. Adams/Grand Teton National Park via AP)
In this undated photo provided by Grand Teton National Park a grizzly bear known as No. 399 walks along side a cub. (C. Adams/Grand Teton National Park via AP)