If you don’t like snakes, look away now because this is a really, really big snake. The anaconda never stops growing, and can reach 40 stone in mass and 21 feet in length. The good news is that it isn’t venomous – the bad news is that it has other ways of killing its prey. Its preferred method is to suffocate the prey by squeezing it until it can’t breathe and then swallowing it whole, without chewing. It takes a week to digest its food so doesn’t eat very often but when it’s hungry, no-one is safe…including humans!