The colossal squid has the largest eyes in the world.
4
The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
Our eyes are always the same size from birth, but our nose and ears never stop growing.
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Tigers can see 6 times better at night than humans.
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Sheep, goats, octopuses, and toads have rectangular pupils.
7
Only about 2% of the world population has green eyes.
36
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
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