How do we get our GSD (5.5 years) to stop with her high pitched whine? It hurts the ears, and is incredibly annoying. She whines close to eating time, when she is in a hurry to go outside (I make her wait for my okay after opening the door), etc. We've tried saying "No whine" and stopping activity, delaying meals so she doesn't feel rewarded, etc., but that hasn't worked. Ignoring her doesn't decrease it either. Anyone have luck with this?