Green Rat Snake
Gonyosoma oxycephalum
A bright green, arboreal colubrid of Southeast Asian rainforests, closely related to the red-tailed racer and well camouflaged in the forest canopy.
- Venomous?
- Non-venomous
- Adult length
- 1.8-2.4 m (6-8 ft)
- Range
- Southeast Asia
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Overview
The green rat snake refers to large, arboreal members of the genus Gonyosoma found throughout Southeast Asian rainforests, closely allied with the red-tailed racer. It is well adapted to a life spent largely in trees.
This species is non-venomous and not dangerous to humans, though individuals can be defensive when disturbed at close range.
Its vivid green coloration and canopy-dwelling habits make it a distinctive, if infrequently observed, part of the Southeast Asian rainforest snake fauna.
How to identify it
The body is a uniform bright to olive green, with the tail sometimes taking on a brownish tinge in certain populations.
- Slender, laterally compressed body suited for climbing
- Elongated head with a slightly pointed snout
- Large eyes with round pupils
- Smooth scales
- Adults typically reach 1.8-2.4 m
Habitat & range
This species is strongly arboreal, inhabiting lowland and hill rainforest canopy across the Malay Peninsula, Indonesia, and other parts of Sundaic Southeast Asia, rarely descending to the forest floor.
Behavior, diet & reproduction
The green rat snake is diurnal and spends most of its time among tree branches and foliage. It can inflate its neck and strike defensively when cornered, along with releasing a strong musk.
It feeds on birds, bird eggs, and small mammals within the canopy. It is oviparous, laying eggs in tree cavities or similar sheltered sites.
Frequently asked questions
Is the green rat snake venomous?
No, it is non-venomous.
How big does the green rat snake get?
Adults typically reach 1.8-2.4 m in length.
Where is the green rat snake found?
It inhabits rainforest canopy across Southeast Asia, particularly the Malay Peninsula and Indonesian islands.
How does the green rat snake avoid detection?
Its bright green coloration helps it blend in with the leaves and foliage of its forest canopy habitat.
Green Rat Snake guides
In-depth guides for identifying and understanding Green Rat Snake.
