Green anaconda Considered the heaviest of the constrictors, green anacondas (Eunectes murinus) are like Burmese pythons and other constrictors in that they'll eat almost anything.

Amethystine Python (Image: Canva) Smaller relative of the green anaconda, this South American snake weighs approximately 40 kg and measures 3–4 metres long.

The northern green anaconda has been identified as a new species after genetic analysis showed it split from its southern counterpart 10 million years ago.

During the filming of an upcoming National Geographic series, a team of scientists discovered that the green anaconda is actually two genetically distinct species.