7. German shepherd
The German shepherd is strong, smart, and hardworking. Many police officers use these dogs, which makes people nervous. If you mistreat or don’t train a German shepherd correctly you could be in for trouble. With an average bite force of 238 pounds, it can be a formidable opponent in a confrontation. German shepherds also tend to have physical issues due to overbreeding. If you want one, make sure you get one from a reputable breeder, then make sure you give your puppy a lot of exercise, socialization, and obedience training.
Next: The quintessential guard dog