Ключевые слова: activity, agility, alertness, animals, athleticism, black, border, cheerful, collie, competitive, course, dog, effort, endurance, expression, facial, fun, fur, grass, happiness, horizontal, hunting, hurdle, jack, jumping, mammal, nature, no, obedience, obstacle, outdoors, parson, people, pets, playful, puppy, purebred, race, running, speed, sports, success, summer, terrier, training, trial, trust, white,