American pronghorns evolved speed millions of years before cheetahs, helping movement and survival in changing landscapes.

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

The fastest land animal in North America is the American pronghorn, and previously, researchers thought it evolved its speed ...

Cheetahs are unmatched in speed, but this advantage creates dangerous limitations when compared to other big cats. Unlike lions or leopards, cheetahs lack the strength to defend their kills once the ...