- Each red blood cell lives an average of 4 months and travels between the lungs and other tissue 75,000 times before returning to bone marrow to die.
- Warthogs live for 15 years.
- Only female mosquitoes bite.
- 'Bookkeeper' and 'bookkeeping' are the only 2 words in the English language with three consecutive double letters.
- An elephant's trunk can hold over 5 litres of water.
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