Some of the essential qualities of a guard dog include their size and strength, but their intelligence, loyalty, courage, and territorial instincts play a big role too. While you may want a pup that can keep you safe, you also want a pooch that will be a nice loving dog to you and the rest of your family. Choosing a pup with the right temperament, and just the right amount of brawn and instinct may be your best bet. Here are the top breeds that may be the pawrfect guard dog to keep you safe.