Get out your stake and garlic because some creatures really do want to suck your blood! We're counting down the top 10 bloodsuckers of nature and seeing how Count Dracula measures up to these little vampires. Vampire bats can drink their own body weight in blood every night but a leech can suck up to 6 times it's own weight in blood. Be ready to discover the ultimate liquid lunch when vampires are taken to the Most Extreme.