I totally knew this already. Thanks, Animorphs!
The fastest creature on the planet is the Peregrine Falcon. It can dive out of the sky at over 200 km/h (124 mph)!
Peregrine falcons live everywhere. They are on every continent (except Antarctica, which is pretty much the exception to everything). Also, while they tend to prefer living in the planes, they also have been known to inhabit urban environments, jumping off of buildings and eating pigeons.
Not convinced that peregrine falcons are fast? Well, here’s a video of a peregrine…