Mexican Brown Snake
Storeria storerioides
A small, secretive brown snake found in the highlands of central Mexico, closely related to the Dekay's brown snake of North America.
- Venomous?
- Non-venomous
- Adult length
- 20-35 cm (8-14 in)
- Range
- Highlands of central Mexico
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Overview
The Mexican brown snake is a small, ground-dwelling colubrid found across the highlands of central Mexico. It belongs to the same genus as the widespread Dekay's brown snake of the United States, sharing similar secretive habits and diet.
Due to its small size and cryptic behavior, it is rarely noticed despite being fairly common in suitable highland habitats.
How to identify it
- Light to grayish brown body, often with a faint pale stripe down the back
- Small rows of darker spots flanking the pale stripe
- Small head, not distinct from the neck
- Round pupils
- Keeled scales giving a slightly rough texture
- Distinguished from other small Mexican snakes by keeled scales and subtle striped pattern
Habitat & range
Found in highland forests, grasslands, and disturbed areas across central Mexico, often under logs, rocks, and leaf litter.
Behavior, diet & reproduction
Secretive and largely nocturnal or crepuscular, hiding under cover during the day. Feeds primarily on earthworms and slugs. Non-venomous and harmless, relying on secrecy rather than defense when disturbed. Gives birth to live young.
Frequently asked questions
Is the Mexican brown snake venomous?
No, it is completely non-venomous and harmless to humans.
What does it eat?
Mostly earthworms and slugs found in moist soil and leaf litter.
Where is it found?
In highland habitats across central Mexico, often hidden under logs and debris.
Is it related to any U.S. species?
Yes, it is closely related to the Dekay's brown snake found across much of the United States.
Mexican Brown Snake guides
In-depth guides for identifying and understanding Mexican Brown Snake.
