Green anaconda

Presentation

The Green anaconda is one of the largest snakes in the world, recognizable by its brilliant green coloring which camouflages it perfectly in aquatic vegetation. This semi-aquatic constrictor snake is perfectly adapted to life in the humid environments of South America, where it reigns as the dominant predator.

Robust and massive body, covered with smooth emerald green to dark green scales, sometimes with yellow spots or bands. Triangular head with eyes and nostrils positioned on top of the skull, allowing the snake to remain submerged while breathing. Thick, muscular skin, adapted to compressing large prey.

Characteristics

Indicative values: they vary by subspecies, sex and region.

Habitat and distribution

Inhabiting the tropical rainforests of South America, the Green anaconda favors areas of rivers, swamps and shallow lakes, particularly in the Amazon and Orinoco basins. It also frequents areas of dense vegetation with stagnant or running water nearby.

Behaviour

Primarily nocturnal and semi-aquatic snake, spending most of its time in shallow rivers and lakes. An excellent swimmer, he moves slowly on land but with great agility in the water. Generally solitary and territorial, it hunts in ambush, waiting for its prey motionless on the surface.

Reproduction

Viviparous species; the female gives birth to young directly, with a gestation period of approximately 5 to 6 months. A female can give birth to between 20 and 40 young measuring approximately 60 to 80 cm. Newborns are immediately independent and carnivorous.

Peculiarities

The Green anaconda is the heaviest snake in the world in terms of total body mass, surpassing even the boa constrictor. Its ability to hold its breath underwater can exceed an hour, making it a formidable hunter in the aquatic environment. Its bright green color makes it almost invisible under floating aquatic plants.

Threats and conservation

Currently not very threatened, the Green anaconda benefits from an IUCN status of Least Concern. However, the gradual destruction of its natural habitat through deforestation and agricultural exploitation in the Amazon basin poses long-term risks for populations.

References

UICN — Liste rouge des espèces menacées

Profile updated 09 August 2026 · Reviewed by the TunisieVet editorial team.

CONSERVATION STATUS

Least concern (LC)

IUCN source, latest published assessment.

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