Over 99% of all species that have ever existed on Earth are now extinct. As we confront a growing number of species currently ... gallery to discover 40 extinct animals that Earth will never ...

This deep-sea polar worm looks like it can't decide if it's dressed for a glitzy party or a gruesome massacre. The skin of dwarf crocodiles found living in a cave in Gabon is turning orange from ...

The teacher is looking into the water at fish swimming below the surface. But they’re not the only amazing animals to call it home. A frog jumps out behind the teacher with a loud “ribbit”.

Some animals have more iconic appearances than others — like poison dart frogs, zebras, and cheetahs. Another member of this infamous family: a raccoon. With a bandit-like black mask around ...