Cocker spaniels return to the top.

Reuters
Sheila Helm walks her English cocker spaniel, Jackson, near Lake Harriet in Minneapolis January 23, 2013.
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:
Cocker spaniels return to the top.
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