Leonardo Da Vinci made a robotic lion in 1515 that would walk, sway, open its mouth and move its tail - it even had a compartment that opened to present flowers.
22
Allegedly, Chrysippus, the Greek philosopher, died of laughter after getting his donkey drunk and watching it try to eat figs.
47
The Mint once considered producing doughnut-shaped coins!
60
A singing birthday card has more computing power than the allied forces in 1945.
30
In 1518, a "dancing plague" struck Strasbourg, Alsace, whereby hundreds of people danced fervently in the streets over the period of a month. Some suffered heart attacks or strokes, and many others died from sheer exhaustion. It remains unexplained.
19
In medieval Italy, if a man was caught kissing a woman in public, he had to marry her whether he liked it or not.
456
Approximately 40% of the U.S. paper currency in circulation was counterfeit by the end of the Civil War.
47