Filas are very affectionate dogs that always listens to the handler. They are excellent cattle and guard dogs. Filas are very suspicious of strangers and will show aggression to them immediately. They are independent, strong and have very strong territorial instincts. This is not a breed for beginners, because of it's natural aggression towards strangers it will need an experienced, confident owner who knows how to curb the breeds aggression. Because of it's aggression it is not suitable for busy households. The aggression in Filas are so instinctive that the Brazilian breed standards advises show judges not to touch the breed. Filas are very faithful to their family and pose no problem for the children of it's family, but may have a problem with their playmates. Through early socialization Filas may get along with other pets, but may not get along with new pets joining the family. Filas may not be a breed to keep in an urban environment.

History

The Fila is a large working breed developed in Brazil. It is believed to have been developed from bloodhound, bulldog, and mastiff. They were found primarily on plantations and farms and used as cattle dogs, and estate guardians. They are also known to be excellent tracking dogs. Because of the aggressiveness of the breed, they have been added to the 1991 Dangerous Dogs Act, and banned or resticted in some countries and cities.