Do yo know

1. Leonardo Da Vinci had painted "Monalisa" during 10 years.
2. A cat has 32 muscles in its ear.
3. Ketchup was sold in the United States as a patented medicine in the 1830's. It was known as "Dr. Miles' Compound Extract of Tomato."
4. Our mouth can produce 1 liter saliva a day.
5. The rubber can be stronger if we put it in refrigerator first.
   
6. Let's see your zipper, Its mark is YKK, isn't it? YKK or Yoshida Kogyo Kabushibibaisha is the biggest zipper factory in the world
7. A cockroach can stay alive without its head during 10 days
8. On the average 12 babies are surrendered to wrong parents.
9. Every casinos in Las Vegas has no wall clock.
10. The sum of chickens in this world is more than the sum of humans.
    

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