Toothless jaw of Grizzly 168 in Yellowstone region 2020.jpeg

This 2020 photo provided by the Wyoming Game and Fish Department shows the worn, mostly toothless jaw of Grizzly 168. The grizzly was the oldest documented in the Yellowstone region. Bear biologists euthanized the 34-year-old grizzly due to its poor health. (Zach Turnbull/Wyoming Game and Fish Department)