Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
Enamel is hardest substance in the human body.
61
By weight, Bone is five times stronger than steel.
417
The average person's skin weighs twice as much as their brain.
131
The human brain is more active during sleep than during the day.
28
The average sperm cell swims at 8 inches per hour.
4
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
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15