The Chihuahua dog breed was first discovered in the Chihuahua state in Mexico in the 1850s. The Chihuahua dogs weigh two to six pounds. No height is given in the standard. However, most Chihuahua Dog’s height is six to eight inches. The height varies largely. The length of the body is a little bit more than the height. The dog is fined boned and muscular. It has a rounded skull, large eyes, and large ears. The muzzle is a little pointed.