Dogs that are grey and highly territorial

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Caucasian shepherds are huge dogs known as confident and fearless family protectors, but also loving, affectionate, and loyal family dogs. Learn more about living with Caucasian shepherds.
Giant schnauzers are loyal, intelligent, and hard-working dogs who are great companions for those willing to train this high-energy breed. Here's hoping you have the time for long walks and playtime in the yard.
With their regal, distinctive stance and independent nature, chow chows both look and act like kings. They aren’t big snugglers, but chow chows will be attentive companions to their immediate family.
Sleek, athletic, and incredibly loyal, Doberman pinschers are some of the best guard dogs in the world. But don’t let their reputations fool you.
 Easily recognized by its long body on stubby legs, the small and spunky dachshund has long been a family favorite. Learn more about living with doxies.
Mastiffs are loyal, protective dogs, famous for their extra-large size and propensity for drooling. Learn more about living with mastiffs.
Loyal but independent, affectionate but aloof, an Australian cattle dog is a great match for anyone who shares his intelligence, high energy, attention to detail, and activity level. Learn more about this exceptional herding dog.
The morkie is a popular dog bred from the Yorkshire terrier and the Maltese. Learn more about the tiny, adorable, and tenacious morkie.
Schipperkes are intelligent, playful dogs who love tons of attention and play well with children and other pets. Learn more about this lovable little dog breed.
Samoyeds are so pretty and cheerful, it’s easy to think they’re lazy lap pooches who don’t want to muss up their stunning white coats. But learn why this loyal, clever, and impish work dog lives best with outgoing, athletic people.
The Anatolian shepherd dog is fiercely loyal and incredibly strong—a working dog like none other. Learn more about this amazing dog breed.
Huge and abundantly wrinkled, mighty Neapolitan mastiffs can be sweet, loyal companions requiring little exercise. Learn more about living with Neapolitan mastiffs.
American bulldogs might surprise you with their devotion, task management, playfulness, and courage. They’re terrific guardians and working dogs—but they also have a sweet, sensitive side that makes them good family dogs.
Miniature pinschers are tiny dogs with huge personalities. Affectionate, loyal, and adorable, they make great companions. Learn more about living with miniature pinschers.
Bullmastiff dogs are loyal, trusting, and gentle giants that offer not only great companionship, but also intense protection. If you’re fond of big, smart dogs with sweet dispositions, learn more about the lovable bullmastiff.
Smart, active, and super loyal, Vizslas are a friendly breed that enjoys burning their energy outdoors, whether hunting or jogging with their owner. Learn more about living with the people-oriented Vizsla.
Known as a national treasure in Japan, Akitas have wooed American dog lovers with their loyalty, watchfulness, and graceful strength. Learn more about living with the Akita.
Great Pyrenees are smart and serious dogs that enjoy lots of space and make excellent guardians and family pets. Learn more about living with Great Pyrenees.
The cane corso is a large, dignified Italian breed that is extremely loyal and excels at being a guard dog. Learn more about living with the cane corso.
Loyal, intelligent, cuddly, and more than a little sassy, Alaskan malamutes apply a dedicated work ethic to everything they do—even playtime! If you’re eager to have one, learn more about their unique personality and needs.