Ключевые слова: activity, agile, agility, animal, attentive, background, black, border, border collie, canine, collie, command, competition, course, dog, effort, exercise, face, fast, flying, fun, grass, handler, happy, hurdle, jump, landing, listening, looking, looking forwards, motion, obedience, obstacle, outdoors, over, owner, people, pet, playful, proud, purebred, running, skill, speed, sport, success, trial, tricks, up, working,