Chihuahua dogs

http://en.wikipedia.org/wiki/Chihuahua_%28dog%29#History
 The Chihuahua is the national dog of Mexico. It gets its name from the Mexican State Chihuahua. It was originally used for sacrifices and as an upper class pet. One theory suggests that they were brought from China to Mexico over 200 years ago. Chihuahua's can have long or short hair. They can be skiddish but also very protective. Son muy populares en la cultura española-americana.