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The American Kennel Club has been tracking the popularity of purebred dogs for 128 years as the number of recognized breeds grew from nine to 177. Here's of the country's most popular dog breeds by the decade, according to data released by the AKC:
The Saint Bernard -- loved once, never again. (Associated Press/AKC)
2. 1890s: Saint Bernard
The Saint Bernard takes the No. 1. spot, becoming the only giant breed to reach the top but never return.
