6. Green anaconda
The green anaconda is enormous, capable of growing to a length of more than 17 feet and weighing in at a far from petite 215 pounds. The green anaconda, which lives mainly in water, dines on anything from caimans to tapirs and jaguars. It kills its prey by wrapping itself around it and crushing the unfortunate victim to death. Female anacondas are said to quite enjoy eating the occasional male anaconda, but only smaller ones.
7. Goliath birdeater
Arachnophobes, look away now. This massive spider, a member of the tarantula family, is the world’s biggest in terms of body size, although one other, the giant huntsman, boasts a greater leg-span. The Goliath birdeater weighs in at not much less than half-a-pound and measures up to 11 inches across. But what are truly scary are its fangs – they can be a terrifying 1½ inches long. Despite its name, the spider’s diet is not restricted to birds. It will also happily chow down on snakes, frogs and rodents.