The green anaconda is the heaviest snake in the world, a massive semi-aquatic boa of South American swamps and slow river systems.
Description
The green anaconda is a colossal olive-green snake mottled with black ovals along the back and yellow flanks. Adults commonly reach 5 to 6 m and can exceed 200 kg, with females dwarfing the smaller males. Eyes and nostrils sit high on the head for breathing while submerged.
Behavior
Anacondas are ambush predators that wait submerged in shallow water for caimans, capybaras, and wading birds to come close. They constrict prey with crushing force then swallow it whole. After a large meal an adult may digest for weeks before eating again.
Range
Native to tropical South America east of the Andes, from Venezuela and the Guianas through the Amazon basin to northern Bolivia. They are most abundant in the seasonally flooded llanos and pantanal wetlands.
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