Dogs, cats and other domesticated species have been tamed and bred by man over the ages, and a set of methods has been developed for their feeding and caring. But many wild animals cannot be tamed, and keeping them in a modern apartment-style environment often causes both animals and masters more grief than pleasure.
狗、貓和作為經濟利用的家畜，是因為長久來被人類有計畫馴化，也已具備一套飼養、管理方法；但許多未經馴化的野生動物，即使過去被飼養過，因為經驗未傳遞、或根本無法馴化，養在現代公寓式的生活環境，往往給雙方帶來的是「痛苦比樂趣多」。