The horses, zebras and asses are in the family equidae.

They rely on their large size swift running style, and herding behavior to evade predation.

 They bare their weights on the tip of a single toe on each foot.

 Their slender legs lock when at rest rather than relying on muscle contraction.

 Their teeth are highly specialized for a diet of grasses and other plants to clip the vegetation.

There are three species of zebra

There are three hundred breeds of horses

There are three species of asses.