In this video, Dr. Michel Hardaker explains the "ins" and "outs" of giving dogs bones. She makes the great point that while some bones are safe for dogs to chew on, it's important to cautious. Bones that are sharp or oddly shaped can injure a dog's mouth or stomach, cause choking, or cause digestive problems. Bones that are big and smooth, however, can be safe and occupy a dog's time for hours.