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

The Cincinnati Zoo is mourning the loss of one of its cheetah, Savanna, who passed away over the weekend, an online release ...

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 ...

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