4 1/2 month Dogo Argentino Pups

The Dogo Argentino (plural Dogos Argentinos) is an Argentine breed of large dog of mastiff type. It was bred in the early twentieth century in Córdoba in central Argentina, primarily for dog-fighting, but also for hunting large game such as peccaries, wild boar and pumas.[3]: 146 [4]: 340 [5]: 189 [6]: 140 [7][1] The foundation stock included a fighting dog of bulldog type, a Bull Terrier and a Mastín del Pirineo.[7]: 21 
History

In the 1920s Antonio Nores Martinez, a young student of Córdoba in central Argentina, set out to create a new breed of fighting dog. He wanted it to have the fighting qualities of the Old Cordoba Fighting Dog, but with greater size and strength.[7]: 23  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 Mastín del Pirineo bitch; by the twelfth generation his dogs were breeding true. They became well known for their success in the ring.[7]: 21  Nores Martinez later introduced crosses with a variety of other dogs including the Irish Wolfhound.[3]: 146 

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][9] The length of the body is slightly greater than the height at the withers, up to a maximum of one tenth more.[1][9]

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.[1][9] The muzzle is of about the same length as the skull.[1][9]