They thrive in the heat, humidity and dense foliage of the rainforest, according to the San Diego Zoo (opens in new tab). Natural habitatĪ green Anaconda swimming underwater (Image credit: Getty/ Mark Newman)Īnacondas live in tropical rivers and swamps, either in the rainforests or grasslands. The dark-spotted anaconda lives in Brazil and French Guiana, according to the International Union for Conservation of Nature (opens in new tab) (IUCN). The Beni or Bolivian anaconda is found only in a small part of Bolivia, according to the San Diego Zoo. Yellow anacondas live in Paraguay, southern Brazil, Bolivia and northeastern Argentina, according to ADW (opens in new tab). Green anacondas are found in the Brazilian Amazon basin, the Orinoco basin, Colombia, Venezuela, Ecuador, Peru, Bolivia, Trinidad and the Guianas, Jacksonville Zoo states. Anaconda in the wildĪll anacondas live in South America east of the Andes. These anacondas have dark brown or black spots on a brown background and grow to be about 9 feet (2.7 m) long, according to Charlotte Penhaligan in " Snakes: Essential Wildlife (opens in new tab)" (Character 19, 2021). Their coloring is similar to the green anaconda, according to World Atlas (opens in new tab)ĭark-spotted anaconda ( Eunectes deschauenseei ) Not much is known about these anacondas, which were long considered a hybrid of yellow and green anacondas until scientists determined they were their own species. The average length is about 9 feet (2.7 m), according to the World Land Trust (opens in new tab).īeni or Bolivian anaconda ( Eunectes beniensis ) Each snake has a unique pattern of yellow and black scales on the bottom of its tail. Yellow anacondas have yellow, golden-tan, or yellow-green coloring with black or dark brown blotches, spots, streaks, and dorsal bands. (45 and 68 kg), according to " The Lives of Amphibians and Reptiles in an Amazonian Rainforest (opens in new tab)" (Cornell, 2005) by William E.
(250 kilograms), according to National Geographic, but the average is probably somewhere between 100 and 150 lbs. The average size of female anacondas is around 15 feet (4.5 m), and the average size of males is around 9 feet (2.7 m), according to Boas and Pythons of the World (opens in new tab). The Guinness Book of World Records (opens in new tab) lists the longest snake ever recorded as a 25-foot (7.6 m) reticulated python. While many publications, including National Geographic (opens in new tab) and the San Diego Zoo (opens in new tab) list anacondas’ maximum verified length as 29 or 30 feet (9 m), Rivas (opens in new tab), who has captured and measured more than 1,000 anacondas, believes they don’t grow much longer than 20 feet (6 m). Furthermore, the skins of dead snakes can be stretched, meaning that it is hard to scientifically verify the length of those, too, especially historical samples, according to Wonderpolis (opens in new tab). Also, an anaconda that has recently eaten will look much larger than one that hasn’t, causing exaggerated estimations of size.
People who see anacondas in the wild are likely to overestimate their length due to fear. It is hard to stretch out a captive anaconda, not to mention potentially dangerous for the snake, according to Rivas. Green anacondas’ length is still a matter of debate, said Heyborne. Their sides are sometimes more yellow than green with egg-shaped spots with yellow centers, according to the Jacksonville Zoo (opens in new tab). They have black or brown egg-shaped spots on the mid-to posterior back of their bodies. True to their name, these are greenish-brown, olive, or greenish-gray. A yellow Anaconda (Image credit: Getty/ Paul Starosta)
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