Sonoran Lyresnake in Yavapai County, Arizona

Posted on September 19, 2026September 19, 2026 by Bryan Hughes

We found this Sonoran Lyresnake on the move on a night hike in Yavapai County sevearl years back. This one is typical of the species for the area, with chaotic brown and tan blotches over a beige body, with a relatively disoganized look compared to some of the more cleanly banded version found elsewhere. They’re slightly venomous, feeding on lizards, rodents, and bats. It’s not harmful to humans, but I still avoid a bite like I would from any snake.

Devitt, T. J. (2006). Phylogeography of the Western Lyresnake (Trimorphodon biscutatus): Testing aridland biogeographical hypotheses across the Nearctic–Neotropical transition. Molecular Ecology, 15, 4387–4407. https://doi.org/10.1111/j.1365-294X.2006.03015.x

Mackessy, S. P., & Saviola, A. J. (2016). Understanding biological roles of venoms among the Caenophidia: The importance of rear-fanged snakes. Integrative and Comparative Biology, 56(5), 1004–1012. https://academic.oup.com/icb/article/56/5/1004/2420638

Sonoran Lyresnake from Arizona Up Close

Posted on September 10, 2026September 10, 2026 by Bryan Hughes

Up close with a Sonoran Lyresnake (Trimorphodon lambda) from Maricopa County, Arizona. These shy snakes are almost entirely nocturnal, which you’d likely be able to figure out from just those big bug-eyes. They’re mildly venomous, rear-fanged snakes, but generally harmless to humans and pets.

Regal Ringnecked Snake

Posted on January 16, 2025January 16, 2025 by Bryan Hughes

To another small snake, this is a terrifying sight. A venomous snake-eating specialist that will take prey almost as large as it is by clamping down tight and flipping over, using its atypically long body as an anchor. After releasing, it follows the mortally wounded snake, face to face, watching it until it either dies or needs another round of venom.

But to humans – totally harmless, not that it would bite anyway.

We found this Regal Ring-necked Snake crossing a roadway after dark in southeastern Arizona. Most that I’ve seen are in the day time … in fact, this is the only one I can find in my memory or notes that I’ve found at night. In this photo, it’s showing its characteristic defensive display, with a brightly colored underbelly and twisted tail.