The other issue that our next door neighbour's beagle has is that he howls constantly whenever he is left outside. This howling can last for hours if they have gone out for the night. The howl is very mournful and sad - as if the dog feels it has been abandoned. We put up with it because our dog is 15 and sometimes barks at nothing - but I'm sure that if you had less tolerant neighbours they would complain a lot.