Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
If the human eye was a digital camera, it would have 576 megapixels.
25
An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
The human brain doesn't stop developing until about 25 years old.
102
Your fingernails grow faster in summer.
744
Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24
The human eye blinks an average of 4,200,000 times a year.
233
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89