Variable Sand Snake

The variable sand snake refers to populations of small, sand-adapted colubrids found in the Sonoran Desert region, closely related to (and sometimes considered synonymous with) the banded sand snake. These snakes are grouped for their shared adaptations to burrowing through loose desert sand and their variable degree of banding across different populations.

As with its close relatives, this snake is rarely encountered above ground due to its almost entirely subterranean lifestyle.

The species is non-venomous and harmless to humans.

• Small, slender, cylindrical body with smooth, glossy scales
• Coloration and banding intensity vary by population, ranging from strongly banded black-and-orange individuals to those with reduced or faint banding
• Wedge-shaped snout and countersunk lower jaw adapted for burrowing
• Small eyes and a head barely wider than the neck
• Adults typically 20-30 cm (8-12 in)
• Similar in build to the banded sand snake, differing mainly in the degree of pattern expression

Found in fine, loose sand habitats of the Sonoran Desert region, including parts of Arizona, California, and northwestern Mexico (Sonora, Baja California). Tied closely to sandy dunes and flats that allow for burrowing.

Nocturnal and fossorial, remaining buried beneath the sand surface for most of the day and emerging at night to forage for small invertebrates. It is a docile, non-aggressive species that flees by burrowing rather than defending itself when disturbed. Reproduction is egg-laying, with small clutches typical of its small body size.