The Chihuahua is a tiny dog with a huge personality. A national symbol of Mexico, these alert and amusing "purse dogs" stand among the oldest breeds of the Americas, with a lineage going back to the ancient kingdoms of pre-Columbian times. Chihuahuas possess loyalty, charm, and big-dog attitude. Even tiny dogs require training, and without it this clever scamp will rule your household like a little Napoleon. Compact and confident, Chihuahuas are ideal city pets. They are too small for roughhousing with kids, and special care must be taken in cold weather, but Chihuahuas are adaptableโas long as they get lots of quality time in their preferred lap.