The desert iguana is so well camouflaged in the gravelly desert sand. Friend sent photo from hike today on Randall Henderson Trail. Photo credit: W. Doty.
Desert Iguana (Dipsosaurus dorsalis)
Amphibians and Reptiles of California: http://www.californiaherps.com/lizards/pages/d.d.dorsalis.html
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
HERPS: REPTILES AND AMPHIBIANS (in general)
Amphibians and Reptiles of California: https://californiaherps.com
Gopher Snake vs Rattlesnake: 5 Key Differences: https://a-z-animals.com/blog/gopher-snake-vs-rattlesnake/
California Snakes Range Maps: https://californiaherps.com/snakes/snakesmaps.html
Reptile Database (worldwide) https://reptile-database.reptarium.cz/
Amphibians Amphibiaweb: https://amphibiaweb.org/site.html
Desert Lizards by James W. Cornett, 2006 (excellent photos, rangemaps and anecdotes)