An ostrich's eye is bigger than its brain, contributing to its keen long-distance vision

Ostriches possess the largest eyes of any land animal, measuring about 5 centimeters (2 inches) across, roughly the size of a billiard ball, and each eye exceeds the size of their brain.

This oversized eye structure enables exceptional long-distance vision,

spotting predators up to 3.5 kilometers (2.2 miles) away,

crucial for survival on Africa's open plains.

The eyes' prominence in the skull limits brain space,

resulting from evolutionary trade-offs prioritizing sharp vision over larger neural capacity,

as brains demand high energy.