Ключевые слова: alert, canine, doberman alertness, doberman pinscher, doberman protection, doberman security, doberman vigilance, doberman watchfulness, doberman working, fierce, guard dog, guard duty, guarding, intimidating, mean expression, mean look, meanlooking, protection, protective, protective breed, security, security canine, security dog, security duty, security guard, security job, security patrol, security working, serious, vigilant, watchdog, watchful, working, working dog,