I have a 3 yo Chug that is an outdoor dog. (http://www.dogbreedinfo.com/chug.htm) Often, he shakes his head vigorously and digs at one ear, whimpering. I can't see anything in the ear. Because of his black skin, can't see any redness. It doesn't appear swollen, and no bad smell. Is it possible he has a wood tick or something down deep in there? Would it be safe to put peroxide in to boil out whatever is bothering him? Maybe some of that mite stuff that I have for the cats? Warm baby oil? I need help on this one.