In this June 29, 2018 photo, wild horses walk to a watering hole outside Salt Lake City. Harsh drought conditions in parts of the American West are pushing wild horses to the brink and forcing extreme measures to protect them. Federal land managers have begun emergency roundups in the deserts of western Utah and central Nevada. (Photo by Rick Bowmer/AP Photo)





In this June 29, 2018 photo, a wild horse rolls in the dust after drinking from a watering hole outside Salt Lake City. Harsh drought conditions in parts of the American West are pushing wild horses to the brink and forcing extreme measures to protect them. (Photo by Rick Bowmer/AP Photo)





In this June 29, 2018 photo, a wild horse drinks from a watering hole outside Salt Lake City. (Photo by Rick Bowmer/AP Photo)





In this June 29, 2018 photo, a wild horse rolls in muddy water after drinking from a watering hole outside Salt Lake City. (Photo by Rick Bowmer/AP Photo)





In this Friday, June 29, 2018 photo, wild horses kick up dust as they run at a watering hole outside Salt Lake City. (Photo by Rick Bowmer/AP Photo)





In this June 29, 2018 photo, wild horses occupy a watering hole outside Salt Lake City. (Photo by Rick Bowmer/AP Photo)





In this Wednesday, July 18, 2018, photo, a wild horse jumps among others near Salt Lake City. (Photo by Rick Bowmer/AP Photo)





In this June 29, 2018 photo, a wild horse shakes off dust near a watering hole outside Salt Lake City. Harsh drought conditions in parts of the American West are pushing wild horses to the brink and forcing extreme measures to protect them. (Photo by Rick Bowmer/AP Photo)





In this June 29, 2018 photo, wild horses drink from a watering hole outside Salt Lake City. (Photo by Rick Bowmer/AP Photo)