
A mating can happen in a split second and sometimes ties only lasts one minute -I had a litter (planned) after a one minute tie, that resulted in 9 puppies. You can even have puppies from slip matins (no tie). So if the dog and bitch were unattended at anytime for more than a minute during her season, it sounds very likely your bitch is pregnant -and due to give birth very soon. Some bitches don't look very pregnant, especially with a first litter. Why were they not kept separated?