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FACTORAMA 13/01/09
Giraffes communicate using 'infrasound' which humans are incapable of hearing and their females are confusingly called 'Cows'. No two giraffes have exactly the same marking on their skin. Additionally, giraffes only sleep between 20 minutes to 2 hours out of a 24 hour period.
Bonus cheese fact: mozzarella is made from the milk of water buffalo.