Found throughout tropical South America east of the Andes primarily in the Amazonian and Orinoco drainages. Also found on the island of Trinidad.
Green anacondas are mainly aquatic but do hunt on land and bask on rocks and tree branches. They do prefer still or slow moving waters.
Green anacondas are giant, heavy-bodied snakes that average 10-15 feet in length but can grow to 20 feet (or perhaps even larger). They generally appear very large in part because of their immense girth and, compared to other boas, the green anaconda is exceptionally stocky and muscular. For its length, it is much heavier than other large constrictors.
The pattern of the scales along the underside of the tail is unique to each anaconda and can serve as a method of identification (much like a human fingerprint).
Diet in the Zoo: rabbits
Diet in the Wild: Anacondas eat a wide variety of different animals, including: birds, fish, turtles, caiman, deer, monkeys, capybara, and other vertebrates.
Lifespan varies widely for individuals of this species. Some have been known to live around 30 years while others survived for only 10.
There are few records of attacks by green anacondas upon humans.
The green anaconda is viviparous- it does not lay eggs.