I need some input on my dog. I took him to the vet about his ear which has been red and irritated on the inside. The vet said he had a yeast infection, or what the old hunters called canker ear, my dad calls it kinker. She gave me some ointment to put in his ear. My question is, what exactly is "kinker ear" and how do dogs get a yeast infection? Also, should I be worried about this, or is it common and cureable? thanks and I look forward to getting some feedback.