Fila Brasileiro (English translation is Brazilian Mastiff) shows its bloodhound ancestry in its long muzzle, drooping skin and magnificent tracking ability. As well as working as a tracker, this strapping dog makes a vigilant guardian. It forms insanely strong bonds and for a very experienced owner, it will prove a dedicated companion with an inbred urge to protect those it loves. It will be gentle and patient with the children of its family, but socialization is essential, otherwise its naturally wary temperant will express itself as aggression to strangers and other animals.