Fila Brasiliero. I met some at a rare dog breed show. They were very, very large.

Fila Brasileiro Puppies For Sale

The dog that even the judge can't touch at shows - Love my dogz

Dog Breeds That are Not Suitable as Family Pets - HubPages

Get to know the Fila brasileiro dog breed

Fila Brasileiro Big, Bold, Brazilian Beast of a Mastiff

Fila Brasileiro (Brazilian Mastiff): Characteristics & Care

The dog that even the judge can't touch at shows - Love my dogz

Diamond State Fila Brasileiros

Fila Brasileiro Dog Breed Information and Pictures