Thank you,anon101 and Acroyali. My vet does suspect that my dog has environmental allergy since he was not all immuned to allergy even with Kangaroo diet. But I do feel he has only one episode of ear problem during that year when he was on kangaroo diet. We had tried soy diet as the vet recommended after the kangaroo diet got banned. The soy diet made him gain weight and having loose stools and he is back with the ear yeast infection again. I switched back to natural balance chicken since the vet feels it is probablly not related to his diet. Natural balance is having a new formula with the chicken diet which I noticed there are preservatives. I decided to look for a new dog food to see if I can make it a little better with his condition then. I saw this website with quesitons with similar situations so I decide to see if I can find other suggestions for a good dog food to try.
