Does my Bull Terrier puppy have an anxiety disorder? He stares at the wall and barks/whines...?

Bull Terriers are one of the only breeds that can get obsessive compulsive disorder, this type of behaviour sounds as though it could be on it's way to OCD. Discourage the behaviour every time it happens, distract him with a game or toy. You need to prevent the behaviour before it becomes more severe, a href="http://www.articlesbase.com/pets-articles/canine-obsessive-compulsive-disorder-how-to-spot-it-and-how-to-treat-it-968477.html" rel="nofollow"http://www.articlesbase.com/pets-article…/a