- A 15th anniversary is called a quindecennial.
- The yo-yo was originally used as a weapon for hunting the in the Philippines.
- Cheetahs can accelerate from 0 to 70 km/h (43mp/h) in 3 seconds.
- Frogs don't usually swallow water (they absorb most of the moisture they need through their skin).
- Your foot and your forearm are the same length.
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