I have had Ava since she was 8 weeks old. She has never been a barker before now (she turned 2 in June). She has always watched quietly as people walked by the front of the house, cats wander in the yard, people working on the corner etc......Now, she has started having barking fits when we are sitting on the side porch. She will see workers in another yard and bark, people walking up the street, other animals, etc. I have taken to putting her inside when she barks because I cant seem to quiet her, I always have been able to before. She doesn't appear frightened, although sometimes she does have her hackles up when dogs are walking by (she has always done that when playing with other dogs, she gets very excited). I dont want to discourage her barking to alert, but I would very much like her to hush once I've checked it out and cleared it. She seems to be so distracted by the other activity she completely tunes me out.Is this another stage?