3- German shepherd:
Don’t tell me that you never seen a German shepherd in a police movie before? This is one of the most famous hard working dogs that you will ever see. Thanks to his high intelligence, courage and devotion the German shepherd is doing great job as a police dog.
Very easy to trained and will do anything you taught him. He will serve you according to what you trained him to do. So just chose what you want him to be, a guide dog, assistance for disabled people, a police dog, a military dog that participate in wars by doing rescue missions, or even a drug detector.