Animals seem to appear in the fossil record fairly suddenly, a little over half a billion years ago. Yet rocks can preserve ...

The animal kingdom may have started its journey on a much earlier Earth than scientists once thought. Long before ...

The toad is considered one of the world’s most destructive invasive species, after being introduced to countries across the ...

From a fitness-obsessed bear to a rather rude orangutan, here are 10 of the most amusing photos of the animal kingdom this ...

The oldest known animal fossils are about 574 million years old, but the fossil record is too sparse to reveal when Earth’s ...

Animals experience the world in surprising ways humans cannot, a difference at the heart of this year’s World Animal Day theme.

The first animals may have appeared hundreds of millions of years earlier than their clearest fossils suggest. A new study ...

The research, published in the journal Science Advances, suggests animals may have originated deep in the Neoproterozoic Era.

African elephants are animals that live by walking slowly through vast savannas and woodlands, and their presence is so ...

New research suggests animals could have evolved as early as 800 to 700 million years ago, roughly 200 million years earlier than some previous estimates. If so, the first animals may have lived ...

After using a technique called molecular clock analysis, researchers have proposed that the origin of animals could be 200 ...