Only about 2% of the world population has green eyes.
36
Tigers can see 6 times better at night than humans.
305
If the human eye was a digital camera, it would have 576 megapixels.
25
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
Sheep, goats, octopuses, and toads have rectangular pupils.
7
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
The human eye blinks an average of 4,200,000 times a year.
233
The colossal squid has the largest eyes in the world.
4