About Dogo Argentino
Characteristics
The Dogo Argentino is a large dog: weights for dogs are some 40–45 kg (90–100 lb), for bitches slightly less; heights at the withers are in the range 60–65 cm (24–26 in) for bitches and 60–68 cm (24–27 in) for dogs.[1][10] The length of the body is slightly greater than the height at the withers, up to a maximum of one tenth more.
The coat is short and always white. A single black or dark-coloured spot on the head is tolerated as long as it is no larger than one tenth of the size of the head. The muzzle is of about the same length as the skull.
Like many other breeds, the Dogo has some genetic predisposition to congenital deafness; it is also predisposed to laryngeal paralysis/polyneuropathy complex.  The dogs usually live for some 10 to 12 years
History
In the 1920s Antonio Nores Martinez, a young student of Córdoba in central Argentina, set out with his brother Augustin Nores Martinez to create a new breed of big game hunting dog, especially wild boar.  He wanted it to have the fighting qualities of the Old Cordoba Fighting Dog, but with greater size and strength.He started with a Bull Terrier bitch with considerable fighting ability, which he bred to a spotted fighting dog of bulldog type. He selected and inter-bred their offspring, selecting for white coat colour and rejecting any animal that was retrognathous (undershot). In the eighth generation he introduced a Pyrenean mastiff bitch; by the twelfth generation his dogs were breeding true. They became well known for their success in the ring.  Nores Martinez later introduced crosses with a variety of other dogs including the Irish Wolfhound, Boxer, Great Dane, Bull Terrier, Dogue de Bordeaux and Spanish Mastiff. 
In 1947 he presented his breed to the Club de Cazadores ('hunter's club') of Buenos Aires; in 1948 a breed standard was published in the magazine Diana.  Antonio Nores Martinez was murdered in 1956; however Augustin, now an international ambassador, would continue to promote the Dogo during his travels.
The Dogo was definitively accepted by the Fédération Cynologique Internationale in 1973.