Martin tests his new running shoes in a race against a cheetah. Martin tests his new running shoes in a race against a cheetah. Wild Kratts is available to stream on pbs.org and the free PBS App ...

Why are cheetahs the fastest runners on Earth? Physiologists studying lizard locomotion have found that running speed peaks in midsize animals, whose bodies hit a sweet spot of long legs and low ...

Cats: Facts about our feline friends Giant tortoise becomes first-time mom at about 100 years old Cheetahs, of course, are built to run faster than humans, regularly clocking speeds of up to ...

"I've never seen anything alive run that fast." With a flexible spine that enables a 22-foot stride, cheetahs have a perfect body for speed. Their hard, cleat-like claws also give them traction ...