Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
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Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
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The Basenji dog is the only dog that is not able to bark.
4
Dogs can make about 100 different facial expressions.
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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!)
11