The 10 Most Popular Dog Breeds [LiveScience 2011-12-20]
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From pups that fit in purses to those that seem fit for a stable, dog breeds run the gamut of size, shape, temperament and overall look. But they have one thing in common: All dog breeds can trace their heritage back to the gray wolf, though scientists are less sure where today's Fidos originated. Gradually humans selected for traits they found useful, or just downright cute, in their dogs — herding ability, particular temperament, fishing acumen — the canines diversified.
Every year, the American Kennel Club (AKC) announces their list of the most popular breeds. Here are the 10 dogs that are relative mainstays on the Top 10 most popular dog breeds' list.