The Anaconda, Eunectes murinusis, is the heaviest snake in the world, weighing up to 250kg. Its eyes and nostrils are positioned on the top of the head, enabling the anaconda to breathe and to see its prey while its stocky body lays submerged under water.
Kills by suffocating the prey
It is very strong and, despite being sluggish, can easily overcome large prey, including small species of deer or even small crocodiles (caimans). It kills large mammals by coiling its body around them and suffocating them.