In the 1930s in Argentina, Antonio Nores Martinez set out to breed the ultimate big game hunting dog, a dog not only capable of taking on dangerous game such as wild boar and cougars, but a dog also capable of being a loyal pet and family guardian.Martinez picked the Cordoba Fighting Dog to be the base for the breed. This breed is extinct today but was described as a large and ferocious dog that was both a great hunter and fighter. He crossed it with Great Dane, Boxer, Spanish Mastiff, Old English Bulldog, Bull Terrier, Great Pyrenees, Pointer, Irish Wolfhound and Dogue de Bordeaux. Martinez kept improving the resulting breed via selective breeding to introduce the desired traits. The first standard for the Dogo Argentino was written in 1928. The Dogo Argentino was introduced to the United States by Dr. Raúl Zeballos, of Las Pampas Kennels, in 1970. Las Pampas Kennels has been continuously breeding Dogo Argentino's since 1950 and upholding the original breed standard.