Why do desert foxes have huge ears while Arctic foxes don't? Learn how Allen's Rule explains the link between body shape and heat management.

From tool-using chimpanzees to puzzle-solving capuchins, the primate world is packed with surprising brainpower. But how do the planet’s cleverest monkeys and apes really compare with human intelligen ...

Have you ever wondered why moose in Alaska are larger than their southern relatives? Have you considered why many Arctic ...

Animals are noisy. And their noises can travel a long way. But making sounds can be a double-edged sword: it can help them communicate, sometimes over long distances, but it can also reveal them to ...

The natural and the social world shaped the evolution of each. Knowing whom to invite to dinner is as important as knowing ...

Scientists rebuilt the face of “Little Foot,” a 3.67-million-year-old fossil, uncovering new clues about early human ...

Then, when it’s time for a tasty dinner of krill, copepods, and small fish, bowhead whales can open their mouths to 4 meters (13.1 feet) high, or two Michael Jordans stacked on top of each other (not ...

It looks like a squat, cuddly little bear, chirps like a bird and has webbed feet for swimming – meet the very rare and bizarre wild dog that's like no other ...