- German Shepherd Dog
Direct, fearless, and protective but not hostile. Highly suspicious of strangers. Perfectly poised, intelligent guardian. - Doberman Pinscher
This obedient, alert and resourceful dog is a companion but above all the finest police dogs, guardian dogs and war dogs. - Rottweiler
This is impressively handsome dog, popular throughout the world, as family dog, but on the first place as a guardian dog. - Schnauzer
Today it is kept primarily as a companion, but Schnauzer remains an excellent livestock and vigilant guard dog, too. With early jobs that included guard, rat catcher, and yard dog, the Schnauzer went on to work with German police and as dispatch carriers and Red Cross aides. - Shar Pei
Dignified, sober, self-assured, self-possessed temperament. Independent and stubborn. Devoted and protective – a superb guardian dog; suspicious of strangers and aggressive with other dogs.
Of course, there are more guardian dogs that deserve to be on the list, but this is our choice.