The Estrela Mountain Dog is a large breed of dog that originated in Portugal. It is a powerful and athletic breed, with a thick, double coat. Its head is large and round, with small, erect ears. Its legs are strong and muscular, and its tail is usually docked. The Estrela Mountain Dog is an intelligent and loyal breed, and it makes an excellent family pet. It is an active breed, and it needs plenty of exercise and mental stimulation. It is loyal and affectionate, and it enjoys spending time with its family.