Basin wiki · Animals
Great Basin collared lizard
Crotaphytus bicinctores · Mojave black-collared lizard
The fast, big-headed lizard with a black neck collar, on the same rocks as chuckwallas.
In the basin
NPS lists Crotaphytus bicinctores — not the eastern C. collaris — as present in the park. Older books used C. collaris as a synonym. The chuckwalla page’s “fast skinny lizard on the same rock” is often this animal or a spiny lizard. They sprint on hind legs when pressed. Wikipedia and the park reptile table have the current name.