Cultures of Animals Reflected in Some English Cliches as busy as a bee as stubborn as a mule as strong as a horse as timid as a mouse as alert as a rabbit Unit 4,Book 4  as busy as a bee  as stubborn as a mule  as strong as a horse  as timid as a mouse  as alert as a rabbit  . Cultures of Animals Reflected in Some English Clichés Unit 4, Book 4