They have had characteristic white milk 24 hours before the dog. They start to eat less (may stop eating), have a lower abdomen, have a smaller belly, have a toilet reflex many times (like urination, diarrhea). If the dog has had enough to eat before, sometimes vomiting occurs in the uterus, which is squeezed into the stomach. From 12-2 hours before birth, the mother dog's body temperature can drop below 37 degrees Celsius, the dog may begin to shiver because she feels cold. At this time, the mother dog often travels a lot, restless spirit, standing still and having reflexes to find a nest. You will also notice that their vulva is swollen and clear fluid is flowing out.