With their keen sense of smell, boars can sense where man has laid a trap and avoid it, while those that are "stupid" enough to be caught can often chew through the ropes and escape.
除非一段時間後，人的味道消失，環境也恢復原狀，才可能有「笨豬」誤入機關，但大型野豬即使被陷阱套牢，也多半能將繩索咬斷脫逃。