1,    a,    adults,    animals,    bred,    breed,    Canidae,    canis,    carnivores,    Collies,    contact,    dogs,    familiaris,    format,    grassland,    greenfield,    hair,    hurdles,    jumping,    jumps,    leaps,    long,    longhair,    lupus,    mammals,    meadows,    medium,    medium-sized,    middle,    move,    movement,    obstacles,    outdoors,    outside,    pasture,    pedigree,    pedigreed,    pets,    pur,    size,    sized,    smooth,    smoothhair,    smooth-haired,    solo,    sports,    trains,    tricolored,    tricolour,    tricoloured,