#Chihuahua #DeerheadChihuahua #Chi #Dog #Dogbreed #Pets #CatsandDogs The Chihuahua originated as a landrace in Mexico, essentially a sized-down version of the basic dingo-like primitive dog. The five-pound, dome-skulled "appleheaded" chihuahua, however, is entirely an invention of the United States. The hardy, 10 pound+ "Deerhead" Chihuahua is still a common sight on the streets of Mexico, and as pets for those unsatisfied with the delicateness of the Applehead.