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Some of the earliest archaeological traces of the existence of dogs in the United States can be dated back to 9,000 b.p. Dogs came to America after crossing from Siberia to Alaska, and it was during this period that the domestication of dogs began in America.
A variety of American dog breeds are noted to have been mixed with Spanish and French dog breeds. The European idea of registering dog breeds and breed clubs led to the foundation of Kennel Club in Great Britain in 1873. The American Kennel Club, prevalent in The United States, was highly influenced by this European predecessor. Currently, The American Kennel Club is the largest purebred dog registry, and registers more than 1 million dogs each year. The kennel club also organizes events for purebred dogs.