Hundreds of animals, from tiny ants to mighty hippos, are shaping the Earth's surface as powerfully as floods and storms.

These big babies can outweigh several of the most popular small car models. In fact, these titanic infants are the largest ...

Whales are a group of mammals that live in oceans. They include some of the largest animals on Earth. The blue whale is the biggest animal that has ever existed. Whales can be found in every ocean ...