Two Parts: Evaluating the Need for Additional Fiber in Your Dog’s Diet Adding Fiber to Your Dog’s Diet Community Q&A. The main reasons for adding fiber to a dog's diet are to encourage good quality and regular bowel movements. It is also used to alleviate constipation and diarrhea, depending on the fiber type. read more
Remember to start with small amounts and gradually increase depending on the dog’s capacity. Adding Fiber to Your Dog’s Diet. Bran is the outer shell of a grain and often removed during processing. Bran is rich in fiber, so sprinkle some in your dog’s food. It can either be rice bran, oat bran, or wheat bran. read more