Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
The oldest recorded elephant lived for 82 years.
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It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
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Unsinkable Sam (nickname of a German ship's cat) who served on 3 warships, one German, two British, all sank in action. The cat survived each sinking, floating away on wooden planks to rescue.
19
Rattlesnake mating sessions have been known to last more than 22 hours.
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