Its protective nature makes this large Japanese breed popular in its native country as a police or guard dog.
Pit bulls were used as fighting dogs because they were tenacious and determined canines.
Giant mastiffs like the Cane Corso were first developed in Italy to hunt large game and protect property. It goes above and beyond in its role as a loyal guard dog.
Chihuahuas may not be as large as other breeds, but if they believe a stranger poses a threat to their owner, they have the ability to bite.
The Chow is a versatile dog that was first breed in China for hunting, herding, and protection. It also has a tendency to form a close bond with a single family member.
Due to their high level of intelligence, Doberman Pinschers are frequently used as police and security dogs. They are considered to be among the smartest dog breeds.
In addition to being extremely intelligent working dogs, German Shepherds have performed a wide range of jobs as guides, police, and search and rescue dogs.
Breeders of giant mastiffs breed them in the Canary Islands to protect their herd from intruding animals and to serve as cattle and pig herders.
Depending on how they are raised, Rottweilers can make loving, devoted family pets or fierce protectors. Naturally territorial and protective, their stocky, thick build can weigh up to 150 pounds.
The athletic endurance of Siberian Huskies during Alaskan sledge racing has made them famous. Small animals could be their target, so other household pets should be handled carefully.