The Chilean Terrier is the first breed of dog from Chile. The breed dates back to the late 19th century, resulting from the crossing of the Smooth Fox Terrier with the Ratonero Bodeguero Andaluz. This dog is recognised by the Kennel Club of Chile (KCC), but is not recognized by the FCI. Since 2011, the breed is classified into Group 3 of Alianz Canine Worldwide (ACW). History Talking about the Chilean Terrier involves traversing the Chilean history since the 18th century and that there is a history of their presence in the country since colonial times, when European immigrants settled in the territory of South America, bringing Smooth Fox Terriers with them in order to exterminate rats and small rodents. Of their English ancestors inherited the restless temperament and barking, while local dogs traced the balance, courage, loyalty and spirit of duty. Tireless companion during the 18th and 19th centuries, the breed was developed in the estates of south-central Chile, easily acclimating to a rustic life, often in a stable. Thus, both peasants and landlords were able to share with this great little dog, so never during that period of our history is identified with a particular social class or caste. In the late 19th century and the Industrial Revolution, many farmers migrated to the cities, bringing their families and their Chilean Terriers. Quickly able to adapt to urban life, being used in new industries and new human settlements (CITES) for the extermination of rats. Because of this last factor, Chilean Terriers were identified for most of the last century with the working-class proletarian country element that played against those who were beginning to take the first steps to establish the activity in Chile, mostly immigrants and members of the bourgeoisie of the time, those more interested in the entry and development of foreign breeds in achieving recognition of the Chilean Terrier. Despite the near-zero interest of local breeders of the time he appeared in, the Chilean Terrier continued to be present in the homes of the middle class of the country, further through the comic Condorito and his ever-faithful Washington, a Chilean Terrier which demonstrates «the Chilean» of this little dog. Today the Chilean Terrier is present throughout the country, it has the virtue of adapting to a variety of climates of Chile, still being used in rural areas as a hunter of mice and in the city, including