Where does this come from, and can I check it?

Ostrich eyes measure five centimetres across, the largest of any land animal. The figure is taken from Natural History Museum, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

Is this really a animals fact?

Yes. It sits on the Animals shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

What else can I read about it?

The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.

Mondo Knows Facts

An ostrich eye is larger than its brain

Ostrich eyes measure five centimetres across, the largest of any land animal.

An adult ostrich has eyes measuring about five centimetres in diameter, taking up so much skull space that its brain is smaller than a single eyeball. These huge eyes provide a panoramic view of African savannas to spot approaching predators from vast distances.

Where this comes from

Natural History Museum

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An ostrich egg is the largest laid by any living birdOne egg weighs about 1.4 kilograms, equal to two dozen hen eggs Giant squid have eyes the size of dinner platesMeasuring up to 27 centimetres across, giant squid eyes spot bioluminescent glow.Box jellyfish possess 24 eyes, including six with true lensesComplex eye clusters located on body corners sense light and shadows.The ostrich is the largest and fastest running bird speciesAdult ostriches run at speeds exceeding 70 kilometres per hour Owls fly silently due to comb-like serrations on their wing feathersFeather serrations break up air turbulence to muffle wing flapping noise.Wandering albatrosses can fly thousands of miles without flappingAlbatrosses exploit ocean wind shear gradients using dynamic soaring.

Tags: ostrich, birds, eyes

An ostrich eye is larger than its brain: the short answers

Where does this come from, and can I check it?: Ostrich eyes measure five centimetres across, the largest of any land animal. The figure is taken from Natural History Museum, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a animals fact?: Yes. It sits on the Animals shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.