Rattlesnake mating sessions have been known to last more than 22 hours.
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Dire wolves actually existed, living up to 10,000 years ago before going extinct.
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It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
11
The largest earthworm on record was found in South Africa and measured 22 feet.
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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.
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