Photo by Jonathan S. Garcia
In 1844, James Clyman wrote "These hills are finely stored with game such as Black tailed deer, antelope, mountain sheep and sometimes Buffaloe, Elk and Grisled Bear." Other than the mule and white-tailed deer (and the newly re-introduced bighorn sheep in a state reserve ten miles south of the national monument), these animals are no longer present. The mammals which can be found in the monument include mule and white tail deer, badgers, coyotes, skunks, red fox, raccoons, porcupines, cottontail and jack rabbits, and prairie dogs.
Rabbits and mule deer are often seen on the summit. Other mammals are seen include porcupines and coyotes, depending on the time of day and season.