What animal has the largest eyes? The colossal squid has the largest animal eyes ever studied. It possibly has the largest eyes that have ever existed during the history of the animal kingdom. In a living colossal squid they measure about 27 cm across — about the size of a soccer ball.
Which animal brain is smaller than its eyes? The ostrich’s eyes are about the size of billiard balls. They take up so much room in the skull that the ostrich’s brain is actually smaller than either one of its eyeballs. This may be why the ostrich, despite its tremendous running speed, is not very good at eluding predators: It tends to run in circles.
Which bird eye is bigger than brain? 4. An ostrich’s eye is bigger than its brain. With the ostrich being the biggest bird in the world, it has an eye as big as the bee hummingbird (smallest bird in the world). That is five times bigger than the human eye.
Which animal can sleep with one eye open? This is down to a cool evolutionary feat called unihemispheric sleeping – the ability to rest one half of the brain at a time, leaving one eye open to look out for potential attacks. Or in some cases, just a lack of eyelids! Snakes actually sleep with their eyes ‘open’, as they don’t have eyelids to close their eyes.