Rattlesnake mating sessions have been known to last more than 22 hours.
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Dolphins have names for one another.
18
Rex the German Shepherd was a rescue dog with a bad temper. He refused to be fed by humans and would attack strangers, but he’s a changed dog after falling in love with Geraldine the goose!
10
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
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492