Alex dreams in his sleep alot. He growls, whines, shakes uncontrollably, and will bark. I know he's alright, but sometimes it worries me. I think he dreams of his previous home, and how he was abused by the way he growls and cringes. Is there anything I can do to help him? When he does it, I stroke him and talk to him. He's dreaming at this moment acctually. Do your dogs dream like this?