Ключевые слова: active, animal, behaviour, black, border collie, canine, clever, collie, command, cute, dog, doggy, domestic, friendship, fun, lifestyle, mammal, obedience, obedient, outdoors, outside, owner, paws, people, person, pet, play, sit, sit down, smart, snow, stay, teach, train, trainer, training, walk, weather, white, winter, woman,