Well, According to the Chihuahua FAQ, not only is the Chihuahua the smallest breed of dog in the world, it's the only "natural" toy breed. That means that the Chihuahua is naturally small and, unlike toy poodles and other small dogs, it hasn't been purposefully bred to be a smaller version of a larger breed. Chichuahuas can weigh up to nine pounds, but must be less than six pounds in order to compete in American Kennel Club shows. The dogs are usually between six and eight inches tall. They can have either smooth, glossy coats or long, shaggy coats, and both varieties of coat come in many solid and patterned colors. Chihuahuas originated in the warm climate of Mexico and are indoor dogs. They make good pets for people who live in apartments, but are not known to be good with children.
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what is the smalest breed of dog??????? 
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