Dogs are great pets, but before the dogs were actually petted pets, they were used to be the protective pets, to guard the houses and herds of livestock, even nowadays its a trend at a lot of places in the world to pet heavy, muscular dogs for the guarding purposes. Rottweiler is one of the dog breeds that was used for these purposes. These images of large, medium-sized, dark, beautiful dogs are pretty as well as steady and strong with obedience and fearlessness as a bonus are sorted for you.