Ostriches kick with a force of around 2,000 pounds per square inch (141 kg per square cm), which is more than twice the force of elite boxers. In addition to the force of their kicks, ostriches also have sharp claws on their feet, and the claws are about 4 inches (about 10.2 cm) long. An ostrich kick can kill an adult human, dog or lion.
More facts about the ostrich:
In fact, ostriches do not bury their heads in the sand, although they sometimes crouch down to try to camouflage themselves.
Most fully grown ostriches are about 1.8 to 2.7 m tall and can weigh up to 350 pounds (about 159 kg). Much of their height comes from their legs, which can cover up to 16 feet per stride.
Ostriches also have the largest eyes of any land animal. Their eyes measure almost 2 inches (50.8 mm) in diameter.
Although cheetahs have a faster top speed than ostriches, ostriches can run faster than cheetahs over long distances. They can run at about 30 mph (about 48.3 km/h) for long distances and can run at speeds of about 40 mph (about 64.4 km/h).