My half cocker spaniel, beagle had ear infections, hair loss, began biting her flesh raw, smelled bad, etc. Nothing seemed to help. Then I took her off the Pedigree dog food I had raised her on. Right now, I feed her Iams, often the lamb and rice, though not exclusively. That only marginally helped. I discovered
http://www.nzymes.com. Their products restored her to good health in a relatively short time.