
I would not allow other dog anywhere near the pups until their eyes are open at least.
Two weeks used to be when I brought my pups downstairs when I used to whelp in the bedroom.
Having more recently had a Mum that was not Happy with others around her babies at two weeks I now move them into the kitchen where the other dogs come and go at three weeks, but I now whelp my girls in the Living room (since kids grew up and left home), and don't allow the other dogs in while pups under three weeks.