I saw this Mojave Rattlesnake (Crotalus scutulatus) crossing a dirt road near the U.S./Mexican border a few years ago in mid-elevation semi-desert grassland. Several other species can be found in the same band o transitional habitat, including Arizona Ridgenosed Rattlesnakes, Banded Rock Rattlesnakes, Western Diamondback Rattlesnakes, and Blacktailed Rattlesnakes. I escorted it off the road before it was killed by border patrol vehicles.
A Mojave Rattlesnake from one of the higher-elevation populations in central Arizona. These snakes are common in grasslands, where they live in relatively flat, sandy areas. This one is from a canyon bottom it shares with several other species of rattlesnakes, including Western Diamondback Rattlesnakes, Arizona Black Rattlesnakes, Blacktailed Rattlesnakes, and Speckled Rattlesnakes.
A Blacktailed Rattlesnake coiled in the grass in the Madrean woodlands of southeastern Arizona. These large, greenish rattlesnakes are a common sight for hikers and naturalists in the area.
The face of a Chihuahuan Hook-nosed Snake. These are small eaters of invertebrates. The subtle scoop on the end of the nose is helpful for finding prey in the sandy, grassland soil where they live.
Hardy, L. M. (1976). Gyalopion, G. canum, G. quadrangularis (Unpublished manuscript). University of Texas. Retrieved from https://repositories.lib.utexas.edu/bitstreams/7425e5d2-4c40-4129-b736-a067e0a8d23b/download
Parga, V. M. (2018). Arthropod diets in Chihuahuan Desert snakes (Unpublished master’s thesis). University of Texas at El Paso.
I spotted this young Gila Monster on an isolated rocky area surrounded by desert grassland. Gilas in this area can often have more black mottling than the banded version found elsewhere in the state. We took some photos briefly and let it be on its way.
