They move through space with incredible agility, but can only keep up their speed for a short distance. So, what’s this about the pronghorn then? The pronghorn, is the fastest animal on Earth ...

"The faster an animal walks or runs," Alexander determined ... "I'm guessing these small ones were fast moving also because the biggest threat to being a small theropod is probably a big theropod ...

Small, fast-moving animals perceive changes in their environment the quickest compared to large, slow-moving ones, new research suggests. The findings, which are yet-to-be peer-reviewed ...

Explore the social structure of bison herds and how older females lead these giant animals across roads and plains.