Our dogs work like the breed was designed to work. Anyone who is seriously interested in obtaining a Bordeaux or any member of any large breed should be aware of the fact that these are not very long lived dogs. The Dogue is an exceptionally powerful and temperamentally dominant breed, as one would expect of a breed with fighting ancestry. As a very powerful breed these are not among the best dogs to be kept in a home that includes other dogs, particularly of the same sex. Unless one in prepared to invest a good deal of training and constant caution, it would be a mistake to try to own two male Bordeauxs or a male Bordeaux and a male of another large breed.
Bitches can be similarly aggressive toward each other.
While the Dogue De Bordeaux Association of America is whole heartedly opposed to the fighting of Dogues in the U.S. or elsewhere, it does recognize the fact that it would be a mistake to attempt to breed Dogues that did not possess the dominant nature that us so typical of this ancient breed. To display dominance over other dogs is among the most definitive characteristics of the breed and to ignore this aspect of the temperament would be to produce atypical and so inferior Dogues. It is a mistake to fully trust any dog regardless of it's breed, age, sex, size or normal temperament, alone with children. This is not to say that it is a mistake to own a dog if you live with children. Careful observation of a dog's behavior toward children is a must, and no dog that displays aggressive behavior toward children should ever be trusted around children again.