This article aims to discuss the largest non-dinosaur land animal to ever exist. There were actually several massive non-dinosaur creatures that roamed the earth before and after the reign of the ...

Water and air pose completely different challenges to animals on a number of levels.

Animals, especially those on land, can't grow indefinitely. The reason has to do with the square-cube law.

No matter where you live, you have animal neighbors, and that's because many animals have had to learn to live very close to humans, like Opal here, Opal is a Virginia opossum, and they can be ...

Named for their resemblance to—you guessed it—brains, these animals grow in domes and can live over a thousand years. They’re made up of thousands of polyps working together to build a ...

The footprints of a reptile-like creature appear to have been laid down around 356 million years ago, pushing back the earliest known instance of animals emerging from the water to live on land ...

The discovery suggests that after the first animals emerged from the ocean around 400 million years ago, they evolved the ability to live exclusively on land much faster than previously assumed.

Vast forests, desert land and even a volcano are among the landscapes included in what's now the largest corridor of federally protected land in the U.S.