The Fila Brasileiro (or Brazilian Mastiff) is a very large working dog developed in Brazil. They are massive and heavyset, with a powerful structure and large head. Breed standard is for males to be between 65 and 75 cm (27 – 29.5 in) at the shoulder with a minimum weight of 50 kg (100 lb). Much heavier weights are often recorded. Females are slightly smaller at 60 to 70 cm (24 – 27.5 in) with a minimum weight of 40 kg (90 lb).

The coat of the Fila Brasileiro is smooth and short. Most solid or brindled colours are permitted except mouse-grey and white. Patchy or dappled coats are outside the breed standard, although some white markings are permitted on the feet, chest, and the tip of the tail.

The modern breed is considered by owners to have a calm and loyal temperament. Some breeders like CAFIB, breed the Fila to have a temperament in which is more like the original Fila Brasileiro temperament. One CAFIB breeder who breeds to the original old line Fila type states, ‘You cannot socialise a Fila to like people. You can obedience train them so that you are in control, but you cannot socialise them to like people. A Fila WILL attack a stranger. Period. If they have the proper temperament, they WILL. ‘Ojeriza’ translates to ‘Hatred and loathing of strangers’.You do not make them mean and vicious… they ARE… and there is no doubt about it. They are not a dog for a person who has an active social life.”

Its power and strength, along with a reputation for aggressiveness and irritability in some situations (particularly around strangers), have led to this breed being banned or restricted in some countries. The breed is one of the four specifically mentioned in the UK’s Dangerous Dogs Act 1991. They are banned in New Zealand and Australia

Editor:- Considering the current information researched on this breed, we have decided not to publish further information, as we would find it hard to recommend this breed as a domestic animal. If there is a Fila Brasileiro breeder somewhere in the world who would like to put forward more information about this breed that refutes the infomration presented here, we would love to hear from you .