It's a bummer we can't fly like birds. Sure, we can jump out of a plane and fall at 120 miles per hour, until the parachute opens (hopefully). But a bird called the peregrine falcon has us beat. It hunts animals by doing nosedives out of the sky -- at more than 200 miles an hour! That makes this bird the fastest animal on Earth. It even has a third eyelid on each eye to keep its eyeballs from drying out -- which makes for some funky math.