#8.Fila Brasiliero
The Fila or Brazilian Mastiff, is a huge dog bred for hunting boar and jaguar, and was even used for tracking down runaway slaves. It has Mastiff, Bulldog and Bloodhound ancestry. It is perhaps the least tractable breed on this list, and is highly prized for its aggressiveness. This personality trait is called “ojeriza”, which translates from Portugese to ‘distrust’. The Fila despises strangers, to the point where Brazilian dog show judges are advised not to touch it, and the standard allows a certain ferocity in the show ring. It is illegal to own a Fila in the United Kingdom.
