The Basenji dog is the only dog that is not able to bark.
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When dragonflies mate, their tails form a love heart.
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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!)
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The oldest creature ever found was Ming the clam at an admirable 507 years old.
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Bats sleep 18-20 hours per day.
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