I am a big proponent of raw and grain free diets for our pups. I have a choc male 3 years who has battled itching / skin leasons and ear infections since he was very young. I started with a dry grain free non chicken protein (rabbit, pheasant & bison are great) and then later moved to a raw (Northwest Naturals or Bravo) diet with lots of green veggies added. It has made a HUGE difference. No ear infections & sjin & itching so much better. Dr Karen Becker & Dr Dan King are great resources. http://www.drkarenbecker.com
Start reading & you will learn so much!!