Before calling your veterinarian, examine your dog’s stool closely so that you can provide the veterinarian with as much information as possible. Providing your veterinarian with a detailed description of the stool that includes shape, consistency and color of the blood can help the veterinarian determine the source of the bleeding. For example, there are two distinct types of bloody stools and your veterinarian will want to know which type your dog is experiencing. Letting your veterinarian know if the stool is solid with bright red blood mixed in it (which can indicate that the blood may be coming from a lower area of the intestinal tract), or if the stool is the consistency of diarrhea (which indicates the blood is likely coming from a higher area of the intestinal tract),