How do you know when your dog is done having puppies?

Most puppies are born at 30 to 60-minute intervals. It is possible, however, for the mother to take a break of 2-4 hours and start delivering again. If you had the mother x-rayed to confirm the presence of puppies you will already know how many puppies she was carrying. If not, and if you have any concerns that she might not be done, take her to the vet for an x-ray to confirm she is done. If she retains a puppy it will almost certainly die, but it can also kill her and any other puppies not yet delivered. You should take your bitch in to the veterinarian for an examination after having a litter of puppies even if you think she is done.