11/02/2026
The green anaconda, scientifically classified as Eunectes murinus within the family Boidae, is renowned as the heaviest snake species in the world, with verified lengths up to 6.32 meters and weights exceeding 97 kilograms, though typical adults measure around 4.6 meters for females and 3 meters for males. Its robust build, olive-green coloration overlaid with black blotches, and distinctive orange-yellow head striping enable effective camouflage in its semi-aquatic environment. Native to the tropical rainforests and flooded savannas east of the Andes in South America, including regions such as the Amazon and Orinoco basins in countries like Brazil, Colombia, Venezuela, Peru, and Bolivia, the green anaconda thrives in swamps, marshes, lagoons, and slow-moving rivers. It is primarily nocturnal and aquatic, utilizing its high-set eyes and nostrils for stealthy hunting while submerged, and moves with agility in water but more laboriously on land. As an apex predator and constrictor, its diet encompasses a diverse array of prey, from fish, amphibians, birds, and reptiles to larger mammals like capybaras, deer, peccaries, tapirs, and even caimans or jaguars in rare instances; juveniles focus on smaller items, and cannibalism, particularly females consuming males post-mating, has been observed. Reproduction is ovoviviparous, occurring during the rainy season with females attracting multiple males in “breeding balls” that can last weeks, followed by a 6-7 month gestation yielding 20-40 live young measuring 70-80 centimeters, which receive no parental care. Classified as Least Concern by the IUCN, the species faces habitat threats in its native range and poses ecological risks as an invasive in areas like Florida, where it is prohibited; in captivity, individuals can live over 30 years.