• Horse race
  The first horses lived about 55 million years ago in the North ...

• DID YOU KNOW?
  Paraceratherium was the biggest land mammal there has ever been. It ...

• Super sloth
  Megatherium was a type of giant sloth which lived about 15,000 years ...

• First diets
  Most early mammals ate insects and worms. Carnivores or meat-eaters ...

• Sea giant
  A giant whale, Basilosaurus, was the largest prehistoric sea mammal. ...

• Amazing But True
  The first elephants lived 40 million years ago. Moeritherium was only ...

• Thunder beast
  The giant mammal, Brontotherium, or 'thunder beast', lived 35 million ...

• Little and large
  The ancestors of today's camels lived about 10 million years ago. ...

• How many mammals?
  There are over 4,000 different kinds of mammals in the world. These ...

• DID YOU KNOW?
  All mammals breathe air. The distant ancestors of mammals were fish ...