Although dogs are man's closest friend, some kinds go above and beyond.
These faithful dogs are the best security dogs because they will do anything to defend their owners.
These dog breeds will defend you with their lives, from small but powerful to huge and menacing.
German Shepherds, recognized for their loyalty and protection, are smart, strong, and fearless guard dogs.
They guard their owners and learn quickly. The 50-90-pound German Shepherd is no joke.
While tough, Rottweilers are loyal and protective of their owners.
These brave 135-pound canines are strong and confident. They make good security dogs with training and socialization.