Hidden Fact 9

This is because they are herbivores animals while eating green grass and all they have to also protect themself from the hunters, in which their eye plays a very important role. So that even if they are eating by laying their head down they can see the whole horizontal view.

An ostrich's eye is bigger than its brain and is the largest eye of any living land animal, which measures up to 5 cm (2 inches) in diameter.