Northern Emerald Tree Boa

The northern emerald tree boa is a non-venomous constrictor native to the northern Amazon Basin, closely related to the more widely known emerald tree boa complex. It is one of the most visually striking snakes in the Neotropics, prized for its vivid green coloration.

The species has drawn comparisons to the unrelated green tree python of New Guinea due to strikingly similar convergent body form and coiling posture, despite no close evolutionary relationship. It poses no venom risk to humans, though its unusually long front teeth are adapted for gripping prey rather than injecting venom.

Northern emerald tree boas have a laterally compressed body and a distinctive resting posture, often coiling symmetrically over a branch with the head resting in the center.

• Adults are bright emerald green with irregular white or yellow zigzag or diamond-shaped markings along the back
• Juveniles are born red, orange, or yellow and gradually turn green as they mature
• Notably long anterior teeth, among the longest relative to body size of any non-venomous snake, used to grip prey
• Large eyes with vertically elliptical pupils and heat-sensing labial pits
• Adults typically reach 1.5-2 m (5-6.5 ft)

This species inhabits humid lowland rainforest of the northern Amazon Basin, including parts of Colombia, Ecuador, Peru, Venezuela, and Brazil. It is highly arboreal, spending nearly its entire life in the forest canopy and understory vegetation.

It favors areas near rivers and flooded forest where prey density tends to be higher.

Northern emerald tree boas are nocturnal ambush predators, remaining coiled motionless on branches for extended periods before striking rapidly at passing birds and small mammals, using their long teeth to secure prey before constricting.

They are ovoviviparous, giving birth to live young, typically in litters of about 5-20. They can be defensive, especially as juveniles, often striking readily when disturbed.