The Alentejo is a large guardian breed, averaging 47.5 kg. They are 73 cm at the withers. The fur is short to medium, and can be yellow, black, and fawn with white markings. The coat can be dappled, streaked, or brindled.
This breed is described as "sober" (calm, serious, solemn). They must be well socialized as puppies. They are not a breed for beginners. They mature slowly, and are very independent. They are not aggressive, and are said to get along well with children. They are very protective. They are extremely territorial.