Wagler's Snake
Leptodeira frenata
A nocturnal, vertical-pupiled colubrid from Mexico and Central America closely related to the widespread cat-eyed snakes.
- Venomous?
- Mildly venomous
- Adult length
- 0.5-0.8 m (1.5-2.5 ft)
- Range
- Mexico and Central America
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Overview
Wagler's snake is a member of the cat-eyed snake group, named for its distinctive vertical pupils adapted for nocturnal vision. It ranges through humid and semi-humid habitats of Mexico and Central America.
While it has mildly toxic rear-fang saliva used to subdue small prey, it presents no significant danger to humans.
How to identify it
- Slender body, tan to brown dorsal color with darker brown blotches or crossbands
- Distinctive vertical, cat-like pupils
- Large head slightly distinct from the neck
- Pale, often cream-colored underside
- Distinguished from other cat-eyed snakes by subtle blotch pattern and regional range
Habitat & range
Found in humid and semi-humid lowland and foothill forests, often near water sources, across Mexico and into parts of Central America.
Behavior, diet & reproduction
Strictly nocturnal, hunting frogs and their eggs, as well as small lizards, at night. Rests coiled in vegetation or leaf litter by day. Egg-laying.
Frequently asked questions
Is Wagler's snake dangerous to humans?
No, it is only mildly venomous to small prey and poses no real threat to people.
Why does it have vertical pupils?
Vertical pupils are an adaptation for enhanced night vision, reflecting its nocturnal lifestyle.
What does it eat?
It primarily preys on frogs, frog eggs, and small lizards.
Where is it found?
It occurs in humid lowland and foothill habitats of Mexico and Central America.
Wagler's Snake guides
In-depth guides for identifying and understanding Wagler's Snake.
