The dog will give birth within a few hours after shaking and panting. This situation means that the dog’s belly is already in obvious pain. The amniotic fluid may break in a few hours, and then in the middle of the month Labor will start in about an hour, so when you find that your dog is shaking, panting, anxious, digging in its nest, etc., you should take the dog to the delivery room and wait quietly for the dog to give birth.