A diverse number of wildlife species inhabit the preserve. Mule deer, elk, moose, sage grouse, Bonneville Cutthroat trout, beaver, Bald eagles, coyotes, small mammals such as meadow jumping mice, wood rats and others occur here. In 2013, pronghorn arrived for the first time! The Preserve provides nesting and brood-rearing habitat for sage grouse with four leks adjacent to the Preserve where males congregate and display.
Due to deer and sage grouse mortality, we have been converting our fences to wildlife friendly fencing to prevent deer being trapped and dying by the wires or sage grouse from collisions. We once found a flying squirrel impaled on a barb on one of the barbed wire fences. We are changing to barbless wire and using fences that lay down in winter to avoid these mortalities.