The Giant Schnauzer is a large, powerful, and compact breed of dog. It is one of the three Schnauzer breeds. Like most large breeds, the Giant Schnauzer needs a fair amount of exercise.Giant Schnauzers are very loyal, loving dogs with a human like temperament.  The Giant Schnauzer excels at obedience, agility, and protection work.  As such, the Giant Schnauzer is predisposed to be a natural guard dog that is extremely personable and funny.   Giant Schnazuers become very attached to their family members, and thusly, are great protection dogs as they will work to protect them at any cost.

The Rottweiler is a medium to large size breed of domestic dog that originated in Rottweil, Germany. The dogs were known as “Rottweil butchers’ dogs” (German: Rottweiler Metzgerhund) because they were used to herd livestock and pull carts laden with butchered meat and other products to market.Some records indicate that earlier Rottweilers may have also been used for hunting, although the modern Rottweiler has a relatively low hunting instinct.

The Rottweiler was employed in its traditional roles until the mid-19th century when railways replaced droving for getting livestock to market. While still used in herding, Rottweilers are now also used in search and rescue, as guide dogs for the blind, as guard or police dogs, and in other roles.^[2]

The Belgian Shepherd Dog (Malinois) is a breed of dog, sometimes classified as a variety of the Belgian Shepherd Dog rather than as a separate breed. The Malinois is recognized in the United States under the name Belgian Malinois. Its name is the French word for Mechlinian, which is in Dutch either Mechelse herdershond (shepherd dog from Mechelen) or Mechelaar (one from Mechelen).

These dogs are popular for K-9 use in police departments, as are German Shepherds.

The German Shepherd Dog (German: Deutscher Schäferhund), also known as an Alsatian or just the German Shepherd, is a breed of large-sized dog that originated in Germany.

The German Shepherd is a relatively new breed of dog, with its origin dating to 1899. As part of the Herding Group, the German Shepherd is a working dog developed originally for herding and guarding sheep. Because of its strength, intelligence and abilities in obedience training it is often employed in police and military roles around the world.^[3] German Shepherds currently account for 4.6% of all dogs registered with the American Kennel Club. Due to its loyal and protective nature, the German Shepherd is one of the most registered of breeds.