An anaconda's a large, non-venomous snake found in tropical South America. They're found mostly in water, such as the Amazon Rivers. Although the name actually applies to a group of snakes, it's often used to refer only to one species in particular, the common or green anaconda, Eunectes murinus, which's one of the largest snakes in the world. Anaconda may refer to: Any member of the genus Eunectes, a group of large, aquatic snakes found in South America. Eunectes murinus, a.k.a. the common… (More on Anaconda)