The Fila Brasileiro (Portuguese pronunciation: [ˈfilɐ ˌbraziˈlejɾu]), or Brazilian Mastiff, is a large working breed of dog developed in Brazil. It is known for its superb tracking ability, aggressiveness and an unforgiving, impetuous temperament. Rather than attacking its prey, the Fila traps it and waits for the hunter to arrive. Owing to these qualities, the Fila Brasileiro is used as a guard dog, as a cattle dog for livestock and as a hunting dog for tracking and controlling large game. When slavery was legal in Brazil in the 18th century, the Fila Brasileiro was used to return fugitive slaves unharmed to their masters.
Also known as
This breed is also called Black Mouth, Brazilian Mastiff, Cabeçudo (, Cabeçudo Boiadeiro, Fila Brasiliero, Fila Braziliero, Fila Dog as well as Onceiro (.
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