Flock Protectors are known for their quiet, intense loyalty, but they are also independent workers who do not take direction readily. Bull Breeds were originally bred for sport to be aggressive animals. However, the aggresive traits have been bred out, and they now make good family companions.
Mastiffs have massive bulk, powerful jaws and thick skin.
They were originally used as war dogs or body guards. They have since been interbred and their temperaments range from laid-back to sharply aggressive. Other breeds are very loyal to their families but react differently with strangers. Some are aloof while others are wary. Examples of these include the Great Dane, rottweiler, Doberman pinscher, and Saint Bernard.