As the fastest land animal in North America, the pronghorn is a highly migratory animal that has incredible vision and can be identified by the horns on its head. Fast Facts Common name: Pronghorn ...

The story of two of the strangest animals on the planet just got a little stranger, thanks to clues revealed by a lone fossil specimen that scientists now say represents a long-extinct ancestor.

TRUE Giraffes are renowned for their height, grace, and distinctive appearance, but they’re also remarkable for having one of the longest gestation periods among land mammals. Scientific studies ...

A new study suggests the platypus and echidna — the only egg-laying mammals — had a water-dwelling ancestor. The finding could upend what’s known of their evolution.