- Some cats are allergic to humans.
- Laughing lowers levels of stress and strengthens your immune system.
- The Great Wall of China is approximately 6,430 Km long (3,995 miles).
- In 1634, Tulip bulbs were a form of currency in Holland.
- Hippopotamuses have killed more people in Africa than any other animal.
- Gorillas can't swim.
- The average person sheds .7kg (1.5 pounds) of skin each year.
- A standard 747 jumbo jet has 420 seats.
- Strawberries taste sweeter at room temperature.
- It is against the law to put pretzels in bags in Philadelphia.
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