For ten points, name this enormous aquatic snake of South America, most notably found in the Amazon.
One sub-species of this creature was at first mistakenly classified as a separate species named "Gigas". This snake reproduces by forming a "breeding ball", in which one or more males wrap themselves around a female and attempt to mate with her. A smaller species called the "Yellow" one of these snakes grows to only 12 feet in length, while the better known "Green" one of these snakes can reach (*) 29 feet. This member of the Boa family is the heaviest snake in the world and often eats caimans and capybaras. For ten points, name this enormous aquatic snake of South America, most notably found in the Amazon.
One sub-species of this creature was at first mistakenly classified as a separate species named "Gigas".
{Anaconda} [accept: {Eunectes}{;} accept “{Water Boa}” until Boa is mentioned]