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

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

Speed is one of nature’s most lethal weapons, and every continent has an animal built to outrun fear. This video ranks the seven continents by their fastest land animal, showing how each species uses ...

Add Yahoo as a preferred source to see more of our stories on Google. On Saturday we showcased the extraordinary speed of North American pronghorn, with footage that showed the animals easily ...

Speed in the animal kingdom comes in many forms, from powerful land sprints to lightning-fast dives beneath the waves. Whether it's in the air, on land, or through water, each species has evolved in ...

CAPE TOWN, South Africa (AP) — For 35 years, American zoologist Laurie Marker has been collecting and storing specimens in a cheetah sperm bank in Namibia, hoping conservationists never have to use ...