The phrase "barking dogs seldom bite" is an idiom which means that people who make a lot of noise or threats are usually not dangerous. There are many synonyms for this idiom which can be used in different contexts. Some of the synonyms include "all show and no go," "empty vessels make the most noise," "much ado about nothing," "oft barked, little sun," and "the loudest drum beats the least." These expressions convey the same message, that loud noises or threats are not always an indicator of real danger. These proverbs and idioms can be used in situations where it is necessary to advise caution or to suggest that someone should not be afraid of a threat.