Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
A man's beard grows fastest when he anticipates sex.
239
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
-137
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191