3: GERMAN SHEPHERD

Commonly used by the Police and other authorities as police dogs, guide dogs, service dogs, search-and-rescue dogs and the like, due to their amazing loyalty and courage. Not only are they highly trainable, they are intelligent and tenacious as well. These highly brilliant animals require a lot of socialization and training, but they can also manage to show aggression and fierceness when not disciplined properly. They have a force bite of up to 238 pounds, proving that there is a reason why they are the choice of the K9 Police Force.