My dog does not really bark too much. I consider this a good thing, because when he does bark I have to assume it is more for a reason. Sometimes I wish that he barked more randomly, but it is probably better this way.
He does have this habit about barking out the sliding glass door at night...
considering that it is diarrhea, I would not hold it against the dog too much. That stuff can be hard to hold in even for us adults. When it comes it really comes.