2,    adults,    animals,    bicolor,    bicolour,    black-white,    cavies,    floor,    format,    friends,    friendships,    gerbils,    gnawers,    hair,    indoors,    laterally,    mice,    pets,    pigs,    rodents,    smooth,    smoothhair,    smooth-haired,    two-colored,    two-coloured,