Giant Anaconda Snake

The most familiar species is the green anaconda, "Eunectes murinus", notable for being one of the world's largest snakes. Green anacondas can grow to be 5.21 m (17 ft) in length and weighing 97.5 kg (215 lb). They are found east of the Andes in Colombia, Venezuela, the Guianas, Ecuador, Peru, Bolivia, Brazil, and on the island of Trinidad.
Other anacondas are the yellow anaconda, Eunectes notaeus, a smaller species found in eastern Bolivia, southern Brazil, Paraguay and northeastern Argentina; and the dark-spotted anaconda, "Eunectes deschauenseei", a rare species found in northeastern Brazil, coastal French Guiana and Guyana. All three species are aquatic snakes that prey on other aquatic animals, including fish, river fowl, caiman, and capybaras. Some accounts exist of anacondas preying on domestic animals such as goats and ponies that venture too close to the water.