Pregnancy and Whelping – Pre-labor
Usually dogs increase their digging, restlessness, panting, and nesting behavior within the last twelve to twenty-four hours before whelping (about the same time their temperature drops below ninety-nine degrees). She may refuse to eat just prior to whelping. You may observe some abdominal rippling or contractions, but you will not see your dog pushing at this stage. This stage can last up to twenty-four hours. Do not leave your dog unattended once her temperature has dropped.