Ostriches have a total of four toes, two on each foot, which is the least of any bird. The inner toes have heavy hoof-like nails, while the outer toes have no nails at all.

Ostriches' long legs and specialized foot structure make them the fastest birds on land, with top speeds of over 40 miles per hour. Even young ostriches can top 35 miles per hour, and their sustained speeds are only slightly slower. Ostriches are thus generally very successful at evading predation. Their legs are also powerful weapons when necessary, and kicks from ostriches have killed lions. Despite their heaviness, the claws of the ostrich are very dangerous and can disembowel a human.