Dogs have always been regarded as the most loyal and friendly pet companions of human beings. Dogs are loyal and obedient to human beings, and once their owners are determined, they will not change. German shepherd dog is one of the widely raised dog breeds and is used as a military police dog. German shepherds are loyal to their owners and protect them. To sum up, German shepherd dogs have a brave heart. They are loyal and obedient to their masters, and they will not shrink back when they are in danger. At this time, the German shepherd is a brave soldier, who will fight hard for the safety of his master and himself. Even if you lose, the German shepherd will not have the slightest idea of giving up. German shepherd dog has extremely high IQ, strong and developed body and great strength. Their loyalty and protection to their owners can be bought with their lives.