Ключевые слова: aggressive, aggressive dog, agressive, anger, angry, angry dog, angry working german shepherd, animal, background, barking, barking dog, bite, black, canine, cop, crazy, defense, defensive, dog, doggy, domestic, fear, fierce, german, german shepherd, gray, gray dog, green, grin, guard, guard dog, handler, helper, leash, mouth, people, pet, police, protect, protection, rushes, safety, security, service, shepherd, teeth, training, uniform, vicious, wound,