Some octopuses that lived over 72 million years ago were as long as whales. These huge predators may have been the largest ...

Extinct animals coming back: Scientists are pursuing de-extinction, aiming to bring back species like the woolly mammoth and ...

As well as revising the taxonomy of this giant octopus, researchers were able to use this newly identified, well-preserved ...

Maryland has become the first state to designate the prehistoric megalodon, a massive shark that lived millions of years ago, ...

Big animals are scary. But what if they were even bigger? Sharks the size of ships, apes that could scale buildings, rats of unusual size - not only are they frightening to think about, they were once ...