puppy bark whether you find that fact irritating, scary, or amusing, you probably wonder what your pooch is saying when she barks at the wind. barks generally are an “alert” sound, while a threatening vocalization almost always includes growling mixed in. dogs don’t just bark when they are excited, although it can seem that way when they are trying to get your attention. they bark when they are frightened, lonely, surprised, irritated, and more. that means there are different barks for different moods, as well.