- All insects have 6 legs.
- The number Pi (the ratio of the circumference to the diameter of a circle) can't be expressed as a fraction, making it an irrational number. It never repeats and never ends when written as a decimal..
- Police dogs are trained to respond to commands in foreign languages (usually German or Hungarian).
- A car travelling at 80kph (50mph) uses half its fuel to overcome wind resistance.
- The skeleton of an African elephant accounts for about 15% of its body weight.
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