Many owners talk so much and give so many commands for the dog to be quiet, that it cause a commotion…The Beagle can then interpret that as the owners being worried as well. It can often help to completely ignore the dog…no praise, no negative words, no attention…nothing. Only when they stop barking will they receive attention, pats, a snack and so forth. Dogs most often choose the behavior or action that brings about the best results.
It can also help to close any curtains if they are looking out of the window and seeing things that set them off such as people walking by or small animals such as squirrel or birds. If they are outside and making a racket, it can help to change their location from the front yard to the back or vice-versa.