This Nov. 7, 2017, photo provided by the National Park Service shows a wolf in Yellowstone National Park, Wyo. Wolves have repopulated the mountains and forests of the American West with remarkable speed since their reintroduction 25 years ago, expanding to more than 300 packs in six states. (Jacob W. Frank/National Park Service via AP)
Donate to the newsroom now. The Salt Lake Tribune, Inc. is a 501(c)(3) public charity and contributions are tax deductible