Long before dinosaurs, Earth’s forests were ruled by a many-legged giant. Here’s why this millipede’s size still challenges ...

Cheetahs are fast. You know this. But which is faster: a cheetah, or a Tyrannosaurus rex? Hosted by: Olivia Gordon Huge ...

Sleep is a universal biological state that allows all animals, from mammals to amphibians, fish and even insects, to restore ...

Sailfish can reach speeds of almost 70mph and grow up to 3.4m long – these images of them hunting are utterly breathtaking.

This video ranks all seven continents based on their fastest land animal. Each segment highlights clear visual moments ...