Snake Identifier
Baja California Rat Snake (Bogertophis rosaliae)
Bogertophis rosaliae by Sula Vanderplank, via Wikimedia Commons, licensed under CC BY 4.0
Colubrids

Baja California Rat Snake

Bogertophis rosaliae

A smooth, glossy reddish-brown rat snake endemic to rocky canyons of the Baja California peninsula.

Venomous?
Non-venomous
Adult length
1.0-1.5 m (3.3-5 ft)
Range
Baja California peninsula, Mexico

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Overview

The Baja California rat snake is endemic to the arid peninsula of Baja California, Mexico, where it inhabits rocky canyons, oases, and desert washes. Its glossy, reddish-brown scales and large eyes make it a distinctive member of the rat snake genus Bogertophis.

It is a nocturnal hunter, relying on constriction to subdue rodents and small vertebrates in its rugged desert habitat.

How to identify it

  • Glossy reddish-brown to chestnut coloration, sometimes with faint darker striping
  • Smooth scales giving a shiny appearance
  • Large eyes adapted for night vision
  • Slender to moderately built body
  • Round pupils

Habitat & range

Restricted to rocky canyons, desert oases, and washes of the Baja California peninsula in Mexico.

Behavior, diet & reproduction

Nocturnal, hunting rodents and small vertebrates by constriction. Reproduces by laying eggs, typically in rock crevices or moist soil pockets during warmer months.

Frequently asked questions

Is the Baja California rat snake venomous?

No, it is nonvenomous.

Where is it found?

It is endemic to the Baja California peninsula in Mexico.

What gives it a shiny appearance?

Its smooth, glossy scales reflect light, giving it a distinctive sheen compared to other rat snakes.