Chi·hua·hua

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A dog of a very small breed developed in Mexico, probably from an indigenous breed, having erect pointed ears and a soft usually short-haired coat.
• A city of northern Mexico south of Ciudad Juárez. The capital of the state of Chihuahua, it is a major commercial center for the northern region of the country.