The Saint Miguel Cattle Dog (Portuguese: cão fila de São Miguel [ˈkɐ̃w ˈfilɐ ðɨ ˈsɐ̃w miˈɣɛl], literally ‘catch dog of São Miguel’) is a dog breed of mastiff 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 as a herding dog for working with cattle.
Image credit: Canarian, CC BY-SA 4.0
Adapted from Wikipedia, CC BY-SA 4.0 — https://en.wikipedia.org/wiki/Saint_Miguel_Cattle_Dog