(Portuguese: cão de Serra da Estrela) is a large breed of dog from the Estrela Mountains of Portugal bred to guard herds and homesteads. It's important to begin training and socializing the Serra da Estrela dog from puppyhood to nurture its acceptance of different situations. This is a strong independent-minded breed that will need persistent training and consistent leadership. As with most livestock guardians, the Serra da Estrela dog is not a pet for everyone. Strong ownership is paramount. Life changed little for the people and dogs of the region, even into the 20th century. The trial consisted of an owner/shepherd bringing his dog into a large field with many flocks of sheep.
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