Snake Identifier
Tiger Rat Snake (Spilotes pullatus)
Caninana no Parque Natural Municipal Atalaia Gualter Corrêa de Faria (01) by Rogério Peccioli de Queiroz, via Wikimedia Commons, licensed under CC BY-SA 4.0
Colubrids

Tiger Rat Snake

Spilotes pullatus

A large, boldly patterned tropical colubrid, striking in appearance and known for its speed and alertness.

Venomous?
Non-venomous
Adult length
1.8-2.5 m (6-8 ft)
Range
Mexico, Central America, and South America

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Overview

The tiger rat snake, also known simply as the tiger snake in parts of its range, is a large and vividly marked colubrid found across much of the Neotropics. Its bold black-and-yellow checkered pattern makes it one of the most recognizable snakes in Central and South America.

Though non-venomous, it is often feared locally due to its size, speed, and defensive display, which includes loud hissing and body inflation.

How to identify it

  • Bold black-and-yellow checkerboard or banded pattern
  • Slender, muscular body capable of climbing well
  • Large eyes with round pupils
  • Keeled scales along the spine giving a slight ridge
  • Can flatten and inflate the neck region when threatened

Habitat & range

Occupies a wide range of habitats including tropical forests, plantations, and semi-open woodland from Mexico through Central America into South America. Found from lowlands to mid elevations.

Behavior, diet & reproduction

Diurnal and highly active, an agile climber often found in trees and shrubs. Preys on birds, eggs, rodents, and other small vertebrates. Lays eggs. Defensive display includes loud hissing and lunging, though bites are not medically dangerous.

Frequently asked questions

Is the tiger rat snake venomous?

No, it is non-venomous, though it can deliver a painful bite in defense.

Why is it called tiger rat snake?

Its bold black-and-yellow banded pattern resembles a tiger's stripes.

Where is it found?

Throughout Mexico, Central America, and much of South America.

How large can it get?

Up to 2.5 m (8 ft), making it one of the larger colubrids in the Americas.