Ключевые слова: action, activity, agile, agility, animals, black, border, canine, collie, competition, crazy, cute, dog, education, energy, enjoying, enjoyment, freedom, front, fun, funny, games, glad, hair, happiness, humor, joy, jumping, leisure, nature, one, outdoors, park, paw, pets, playful, playing, puppy, race, racing, running, satisfied, smiling, speed, sports, stadium, training, view, young,