Snake Identifier
Emerald Tree Boa (Corallus caninus)
A snake - panoramio by bynyalcin, via Wikimedia Commons, licensed under CC BY 3.0
Boas

Emerald Tree Boa

Corallus caninus

A vivid green, arboreal boa of the Amazon rainforest, prized for its striking coloration and specialized ambush-hunting posture.

Venomous?
Non-venomous
Adult length
1.5-2 m (5-6.5 ft)
Range
Amazon Basin, South America

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Overview

The emerald tree boa is one of the most visually striking snakes of the Amazon rainforest, spending nearly its entire life coiled among tree branches in the dense canopy. Its brilliant green coloration, often broken by white or yellow zigzag markings, provides excellent camouflage among leaves.

It shows a remarkable convergence in appearance and behavior with the unrelated green tree python of New Guinea and Australia, both species having evolved similar coiled resting postures independently.

How to identify it

  • Bright emerald green dorsal coloration with irregular white or yellow zigzag bands
  • Yellow to cream underside
  • Long, curved teeth relatively large for a boa, adapted for snatching prey in trees
  • Heat-sensing labial pits along the upper and lower jaws
  • Juveniles are born red, orange, or yellow and gradually turn green with age

Habitat & range

Inhabits the humid lowland and lower montane rainforests of the Amazon Basin, spanning parts of Brazil, Peru, Ecuador, Colombia, Venezuela, and the Guianas. Almost exclusively arboreal, rarely descending to the ground.

Behavior, diet & reproduction

Strictly nocturnal, spending daylight hours coiled in a characteristic saddle posture over a branch. An ambush predator feeding on birds and small mammals, using deep heat-sensing pits to detect prey in darkness. Live-bearing, giving birth to fully developed young.

Frequently asked questions

Is the emerald tree boa venomous?

No, it is a nonvenomous constrictor.

Why do emerald tree boas look like green tree pythons?

The resemblance is due to convergent evolution, as both species independently adapted to similar arboreal ambush lifestyles.

What color are baby emerald tree boas?

Juveniles are typically born red, orange, or yellow before turning green as they mature.

Where do emerald tree boas live?

In the rainforest canopy of the Amazon Basin in South America.

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Emerald Tree Boa