german shepherd with alert expression, open mouth, on white background

dog pet animal mammal puppy nose dogs canine intelligent loyal protective police military search rescue family companion trained obedient versatile athletic energetic friendly sociable black tan medium-sized ears strong courageous confident watchful trainable alert active working herding guide sled service therapy guard watchdog obedience agility tracking scenting endurance discipline dominance territorial barking shedding grooming health exercise diet temperament intelligence trainability loyalty courage confidence training socialization coat eyes teeth paws claws german shepherd breed shepherd-animal shepherd-dog