Green anaconda (Eunectes murinus)

The green anaconda is the animal in the world with the most deadly hug. The snake is feared for its incredibly powerful squeeze that suffocates and breaks the bones of its prey. Green anacondas eat prey as big as wild pigs, tapirs, and jaguars. They swallow the dead prey whole and then stay for weeks without food.

A green anaconda can grow up to 30 feet with a 12-inch diameter and weigh 550 pounds. They are the largest snakes in the world. South America's green anacondas are adept swimmers who spend most of their lives in water.