Secret Life of Dogs

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They're loyal, fun, loving and brilliant companions, so it's no wonder they're man's best friend. Yet they descend from the wildest of predators. So how did the much-feared wolf become the much-loved dog in the heart of the human's home?To find out, this three-part series travels all over the world to bring viewers the most remarkable stories and the latest scientific discoveries that reveal how dogs have become man's closest companions, unrivalled working partners and trusted family members. This is dogs as you've never seen them before.