The Chihuahua is the smallest breed of dog in the world; it was named after the state of Chihuahua in Mexico. The Chihuahua is a graceful, alert, swift-moving little dog with saucy expression, compact, and with terrier-like qualities of temperament. It is a strong-willed, intensely loyal dog breed. It becomes very attached to its owners, even to the point of jealousy. There are two distinct breed types, one with a long coat of soft texture, the other with a short coat. Identical otherwise, both can be whelped in the same litter. Adored for its small size, the Chihuahua is a bright eyed, dainty dog. It is perfect for apartment living.