What kind of food can a dog with diabetes eat?

You should ask your Veterinarian who diagnosed this, this question. I think they have prescription diets available for dogs with Diabetes. Ask your Vet this question too.

Stay away from treats unless it is some sort of a vegetable such as a piece of carrot or sweet potatoe, celery, squash, cantalope but only in small amounts and again check with your Veterinarian first. These are for treats only and again in small amounts only.