Does anyone know why Monty will be soundly sleeping and just pop up and start howling like a wolf at a full moon? This happens both in middle of the night and during the day and just started in the last couple of weeks. At night I will take him out and he goes potty then comes back in to go to sleep only to wake up again a half hour later and do the same thing. We haven't slept past 5am for the past two weeks. He also does this during the day. Sometimes it is when the neighbor dogs are barking but other times it seems like he is woken from a nightmare or something? I am working on the "no barking" command that I have seen post on this forum but it just seems like he is nervous or scared or something and I don't want that for him.