The Castro Laboreiro Dog (Portuguese: cão de Castro Laboreiro, 'dog of Castro Laboreiro'), also known as the Portuguese cattle dog or Portuguese watchdog, is a dog breed of the livestock guardian type, originating from Castro Laboreiro in the northern mountains of Portugal. The standardised appearance for which the Castro Laboreiro Dog has been bred is somewhat wolf-like in outline. It is a large dog, but not oversize. Height should not be above 60 cm (24 in) at the withers and weight should not be more than 40 kg (88 lbs); females somewhat smaller. Coat colours are ofte described in wolf terms: 'dark wolf colour', 'light wolf colour'. Most breeders prefer what is considered the most authentic, called 'mountain colour' (cor do monte), also described as similar to the coat of a wolf, but a mixed light and dark grey interspersed with individual hairs (not spots) that are brown (called 'pine-seed') or dark red (called 'mahogany'), forming overall a brindle pattern. (Source: Wikipedia.org, CC BY-SA)