she may be hearing your furnace/ac or a typical house sound and it startles her....Riley does that every once in a great while....I am a Firefighter and often he does that type of thing when I'm not home. My wife says he only barks a couple times until she tells him it's ok. Then he goes back to sleep. I have seen it when I am home too though. I think it's the wind....or house noise. Good luck |