2,    adults,    amphibians,    animals,    bank,    common,    contact,    copulates,    copulating,    copulation,    format,    frogs,    lakes,    laterally,    move,    movement,    moves,    outdoors,    outside,    pair,    river,    riverside,    Sex,    shores,    summerly,    summertime,    summery,    swimming,    swims,