This breed was developed in Argentina at the beginning of the 20th century by a doctor through the crossbreeding of many breeds: Bulldog, Bull Terrier, Mastiff and the Cordoba Fighting Dogs.
It is a large-sized dog, with a rectangular, strong body. The head is round, big, with a short and wide muzzle and with a big, black nose, that can have pink spots. The ears are medium-sized, drooping at birth and can be cropped to stay erect. The eyes are slightly slanting, almond-shaped and dark. The tail is long and kept low with a slightly curved tip. The fur has short, thick and white hair.
It is a smart, fast, brave, persistent, strong and daring dog. It is devoted and affectionate to the family and cautious with strangers. It has a dominating attitude towards other dogs and other household animals, even if it was socialized with them. Generally it accepts children if it was socialized. It is not a very noisy dog.
This dog's fur is easy to tend. A casual combing is enough.
This dog feels good outdoors, in a space adequate for exercise, with a master with experience in raising dogs. It must be socialized and trained.
The training must be done by a person with a lot of experience in raising dogs, it must be consistent, well-balanced, but not rough. A gentle tone and an encouraging attitude must be used when things are going well. An inadequate training can have unpredictable consequences.
It is a very good hunting dog for wild boars and cougars. It is also raised as a companion dog.