Add Yahoo as a preferred source to see more of our stories on Google. Photo by Amal Alhasan/Getty Images for GEA YouTube sensation IShowSpeed is at it again, this time going toe-to-toe with one of the ...

Meeting and petting a gorgeous one-year-old cheetah. The fastest animal on the planet can reach speeds up to 70 mph!

iShowSpeed lived up to his name recently. The content creator went head-to-head with a cheetah, the fastest mammal in the world, in a foot race. It appears he held his own in the video, but it's hard ...

A cheetah robot funded by the U.S. military has broken the land speed record while running on a lab treadmill. Its robotic display of athleticism gives hope for new battlefield robots that could prove ...

P ronghorn antelopes are the fastest land animals in North America, clocking speeds of up to 55 miles per hour for a half mile, and 45 miles per hour for longer. Since they mostly run in response to ...

Learn how Miocene fossils from the Mojave Desert reveal that pronghorn running adaptations developed long before high-speed cheetahs appeared in North America.