Whyaresomeanimalspet的精选

问题详情：根据短文内容和所给中文提示，用单词的正确形式完成以下短文。Whyaresomeanimalspetsandotherslunch?   Insomecountries,dogsandcatsarecommonlyconsideredaspets,whilechickens,ducks,and1  (猪)arefood...