Tigers can see 6 times better at night than humans.
305
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
The average person's skin weighs twice as much as their brain.
131
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161
A man's beard grows fastest when he anticipates sex.
239
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Your thumb is about the same size as your nose.
124
Only humans shed emotional tears.
331