Rottweilers have been used as herd dogs, police dogs, watchdogs, and bodyguards, but they also make great companions. This is a powerful, smooth-coated breed. Height: males from 24 to 27 inches at the shoulder; females two inches less. The coat is harsh, and black with rich tan markings. This breed must be brushed regularly and thoroughly. Very agile breed, they need a lot of outdoor excercise. They should be trained early, as they are a strong breed and can overtake a human.