I noticed a couple of weeks ago that Shasta was tilting her hear and shaking on the one side. I figured maybe she had something in her ear and looked at it closely, nothing visually wrong with either ear. She was fine when I touched the one ear but shook her head whenever I even gently rubbed the other. I cleaned both ears with special cleaner the vet gave me and things seemed to get better. Since then she's been slightly cocking the one ear and shakes her head more than normal but nothing too bad. Then tonight she was going nuts with the shaking and tilting again. Once again I looked, definitely no obvious infection but the ear that has been bothering her was red/irritated looking like she has been scratching it when I'm not looking. Is there some kind of mite or other common ear problem that could be the problem? She has never had an ear problem before but had a really bad case of vestibular disease last May, I hope it is not that happening again.