The document provides information on the top 15 dog breeds by American Kennel Club registration numbers from 2011 to 1997. The top breed for all years listed is the Labrador Retriever. Additional details are given on the origins and traits of some of the top breeds, including the Labrador Retriever, German Shepherd, Beagle, Golden Retriever, and Yorkshire Terrier. Photos are also included showing some of the breeds.