A Brindle = Tigrada Fila Brasileira dog at the fazenda Dos Poçoes. This is the only dog breed originated in Brasil putatively for the purpose of fighting the onça (Jaguar). The neck skin can be pulled up 8 inches. The loose skin enables the dog to turn around inside of its own skin to fight any aggressor holding on. While they make a good family pets, they can be trained to be fierce watch dogs.