Move over, blue whale. You've been demoted. Scientists have discovered what they say could be the heaviest animal that ever lived on Earth: a gigantic ancient whale that may have been two to three ...

The heaviest animal to have ever lived may have been an ancient colossal whale that was recently discovered in Peru, scientists said. Scientists have been digging up massive fossils of the new ...

This behemoth still swimming in Earth’s oceans is the current titleholder for the heaviest animal to ever exist — living or dead. And in this corner is the contender, a massive marine mammal ...

There could be a new contender for heaviest animal to ever live. While today's blue whale has long held the title, scientists have dug up fossils from an ancient giant that could tip the scales.

A newly discovered whale that lived nearly 40 million years ago could be the heaviest animal to have ever lived, based on a partial skeleton found in Peru, scientists said on Wednesday.

A colossal ancient species of whale that lived 39 million years ago was a true heavyweight, weighing more than double a blue whale and likely earning itself the title as the heaviest known animal ...

There could be a new contender for heaviest animal to ever live. While today's blue whale has long held the title, scientists have dug up fossils from an ancient giant that could tip the scales ...