When wildlife travelers (particularly safari fans) discuss the fastest animals in the world, a particular cat from the small cat lineage (Felinae) almost always enters the conversation: the cheetah.

A new Imperial College London study has answered a long-held question about why medium-sized land animals like cheetahs tend to be fastest. There's a discrepancy in the animal kingdom. While many key ...

A cheetah sprinting across the savanna can look almost unreal in motion. The animal starts low in the grass, completely focused, then suddenly launches into a chase at astonishing speed. That ...

A well-known cheetah took on a leopard to protect her one remaining cub. ©nwdph/Shutterstock.com They may grow into the world's fastest mammal, but cheetah cubs aren't nearly so speedy. A video from ...