- Dolphins sleep with one eye open.
- When 2 zebras stand side by side they usually face each other in opposite directions to keep an eye out for predators.
- 'underground' is the only word that begins and ends with the letters 'und'.
- Your head contains 22 bones.
- Sharks never stop moving even when they sleep or rest.
- An avocado is actually a large berry.
- The 'you are here' arrow on maps is called an ideo locator.
- After bananas a zoo gorilla's favorite food is celery.
- The US shreds 7,000 tons of worn out currency each year.
- The Dead Sea is actually an inland lake.
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