
We kept a bitch that insisting in putting the pups on the sofa, we had to be with her 24- 7 until they were 8 weeks old, whats more annoying is that we had a specially made whelping box and she had slept in it for 2 weeks before the whelp and she gave birth in it.
They would have died if we hadn't found them as 1 went down the back of the sofa it was one of the other dogs in another room that alerted mum to what was happening as she was getting very upset and tried to drag mum back, (all this happened in the time it took mum to pop to the loo).
I think that some bitch's do, do this you will have to keep a special eye on her, we had to modify the box to this bitches needs.