Ключевые слова: active, animal, attentive, background, boy, canine, child, command, contact, cute, dog, education, exercise, eye, footwork, handlers, heel, heel work, heelwork, instructor, interested, jack, jack russell, look, love, obedience, obedient, outdoor, outside, owner, park, people, perfect, person, pet, play, practice, puppy, road, russel, small, sport, teach, team, teamwork, teenager, terrier, together, training, view, work, young,