Madden has been shaking his head a lot lately like a cat will do if they have ear mites. I've thoroughly checked his ears and there is no wax build up or anything. No sign of mites, his ears don't stink like infections do, they aren't raw or red or feverish, theres no sign of irritation at all. Am I just to much of a worry-wart or could there be something wrong that I don't know about?