why do u all jump to assumptions and think i am breeding a dog of mine back to back. this is not my dog, ok. i just wanted to know the answer to a question.
so think before you all jump in mouth first ok.
She won't come back into 'season' until the pups are 3 to 4 months old. People assumed the worse because of the way you asked the question is why they reacted the way they did. If this is a pet and not a show dog, I recommend having her spayed after she weans the pups from this litter.
agree with other posters, back to back breeding is a very bad idea, whether it's your dog or anyone else's. Most reputable breeders will let a dog have at least one season between breedings, so the dog might have pups once a year, and even then it wouldn't be adviseable to let this continue for too long.
We had a dog that had pups many years ago, we sold one of the pups to a friend of my mum's and she over bred the dog, that poor dog had three litters of puppies back to back and when the woman decided to have her spayed after her last litter she was actually so weak that she died under the anesthetic.