The rarest chocolate bar in the world is the Porcelana bar. There are only 20,000 of these bars produced a year, and they sell for $90 per pound.

Babies who wear disposable diapers are five times more likely to develop diaper rash than those that wear cotton diapers.

An adult porcupine has approximately 30,000 quills on its body, which are replaced every year.

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