Cheetahs: National Geographic Films World's Fastest Animal

In June 2012, National Geographic magazine filmed the world's fastest runner with one of the world's fastest cameras at the Cincinnati Zoo. See how it was done in this behind-the-scenes video. Watch the actual slow-motion video and learn the secrets of its speed.

EDITOR'S NOTE: The cheetah, named Sahara ("Sarah"), died January 21, 2016, at age 15.