- Rainbows can only be seen in the morning or late afternoon (the sun needs to be less than 40 above the horizon).
- In 1872 Yellowstone in the US was the world's first national park.
- The skeleton of an African elephant accounts for about 15% of its body weight.
- A bear in hibernation loses up to 25% of its body weight.
- A crocodile can't stick out its tongue.
- If your DNA was stretched out it would reach to the moon 6,000 times.
- Kangaroos cannot jump without their tails touching the ground.
- That you can spell the word 'level' the same backwards.
- The winter of 1932 was so cold that Niagara Falls froze over completely.
- Whales can't swim backwards.
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