Idiomsareessenceofalanguageandakindofspecialandfixedphrasesorshortsentencesinthelongperiodoflanguageuse.Becauseanimalshavebeenconsideredaspeople’sbestfriendsforhundredsofyears,peopleadoptdifferentspeciesofanimalsasmetaphorstoexpressalltheiremotions.However,duetothedifferentnationalcharacteristicsbetweenEnglishandChinese,suchasgeographicalconditionsandtraditionsoinmostcaseseasternersandwesternershavedifferentattitudesandunderstandingtowardssameanimals,ofcourse,someanimalidiomshavethesamemeaning.