Ключевые слова: action, agile, animal, beautiful, border, border collie, breed, breeding, canine, catch up, collie, competition, cute, demonstrates, disc, dog, dog sports, fast, field, fluffy, flying, flying saucer, fresh air, fun, grab, grass, gravity, green lawn, joy, jump high, levitation, nature, obedient, outside, park, pet, plastic, play, playful, reach, shaggy, show, smartest dog, soft, speed, sport, summer, thoroughbred, walk, worker,