Ключевые слова: active, aggression, aggressive, angry, animal, animals, attack, beast, black, black dog, canine, danger, dog, dogs, domestic, facial expression, fangs, fear, ferocious, fight, friendship, fur, furious, furry, fury, grin, jaws, mouth, muzzle, nature, outdoor, pet, play, portrait, puppy, rage, roar, snout, strong, teeth, tooth,