Tigers can see 6 times better at night than humans.
305
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
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
Enamel is hardest substance in the human body.
61
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
On average a woman has 4 sexual partners in her lifetime.
-143