Tropical Milk Snake
Lampropeltis triangulum polyzona / annulata (complex)
A brightly banded red, black, and yellow milk snake from Mexico and Central America that mimics venomous coral snakes.
- Venomous?
- Non-venomous
- Adult length
- 0.6-1.1 m (2-3.5 ft)
- Range
- Mexico through Central America
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Overview
The tropical milk snake is one of many regional forms within the wide-ranging milk snake complex, occurring from Mexico south through Central America. Its bold tricolor banding provides classic Batesian mimicry of dangerous coral snakes sharing its range.
Completely harmless to humans, it is a constrictor that helps control rodent and reptile populations in the varied habitats it occupies.
How to identify it
- Bands of red, black, and yellow (or white) encircling the body
- Black snout, unlike the often red or pale snout of true coral snakes
- Smooth, glossy scales
- Round pupils and a narrow head barely distinct from the neck
- Band pattern and sequence vary regionally but always lack the true coral snake's red-touching-yellow rule in this species' local mimicry pattern
Habitat & range
Inhabits a broad range of environments including tropical forest, forest edge, agricultural land, and rocky hillsides from lowlands to moderate elevations across Mexico and Central America.
Behavior, diet & reproduction
Primarily nocturnal and secretive, sheltering under logs, leaf litter, and debris by day. A constrictor that feeds on lizards, small mammals, and other snakes. Egg-laying.
Frequently asked questions
Is the tropical milk snake venomous?
No, it is entirely non-venomous and kills prey by constriction.
Why does it look like a coral snake?
Its banding pattern mimics venomous coral snakes as a defense strategy, deterring predators.
How can you tell it apart from a coral snake?
Band sequence and head coloration differ; local coral snakes typically have red touching yellow bands and a different head pattern.
What does it eat?
It preys on lizards, small mammals, and other snakes.
Tropical Milk Snake guides
In-depth guides for identifying and understanding Tropical Milk Snake.
