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Besides its namesake, the Chuckwalla lizard, the area is home to bighorn sheep, desert tortoises, kangaroo rats, burrowing owls and jackrabbits.

The monument’s name comes from the stocky Chuckwalla lizards that frequent the area, which is also home to bighorn sheep, desert tortoises, kangaroo rats, burrowing owls and jackrabbits.

Yucca moth caterpillars, kangaroo rats and ground squirrels eat their seeds.

Across the street from his property is open space, where he says he regularly sees owls and kangaroo rats among the grasses and native plants.

Wayne State University stuck flies on a “treadwheel” to force them to mimic climbing, while Washington State University put kangaroo rats on a treadmill to study how their feet interacted with unfamiliar terrain.