There are some common signs of digestive problems in dogs. They are usually gas, bloating and diarrhea.  If your dog has more than three bowel movements in a day, you may want to withhold food for twenty four hours.  There are simple causes to lots of digestive problems. Food changes can cause some digestive problems. If you switch to a new food, do it gradually for a week or so to get your dog used to the new ingredients.  Some dogs have food sensitivities. Some dogs have trouble digesting foods like corn, wheat products or soy. If this is the case, switch to a rice based diet. Parasites will cause digestive problems. There are several types of internal worms that can cause diarrhea and gas in dogs. Follow the proper deworming guidelines.  If you give your dog table scraps, digestive problems can occur. Do not give your dog spicy, salty or heavily processed table scraps. If the problem persists, see your vet who may prescribe pet medication that can help.