Cão Fila de São Miguel

Dog

The Cão de Fila de São Miguel (frequently translated into English as the São Miguel Cattle Dog, but other names, such as Azores Cattle Dog, may be used) is a dog breed of molosser type originating on São Miguel Island in the Azores, an island chain which is one of the autonomous regions of Portugal. The breed was originally used for working with cattle.

http://en.wikipedia.org/wiki/C%C3%A3o_Fila_de_S%C3%A3o_Miguel