
We have recently had litter of 11. She was scanned for 6 at 28 days, and luckily had no problems giving birth. It was our first time, and I'm grateful for that more than anything else.
We used our common sense during the whelping. With the first puppy, she was pushing for about 45 minutes, and rather than intervene, we put a slip lead on her and led her out into the garden. She immediately started giving meaningful downwards pushes and out popped first puppy. After that it was quite regular pups. By number 11 she was obviously getting very tired, and I could see baby's nose appearing and then disappearing. We literally lifted her onto her feet (2 of us) put her lead on again and out into the garden. My husband caught the last puppy in a towel and rushed it indoors.
We knew after 8 that there were more in there by gently feeling her stomach, and could feel more pups inside ready to be born.
Good luck, take a big breath when the time comes, stay as calm as possible especially around the bitch, and have everything to hand you will need, including the vets phone number. Also worth checking who will be on night duty around the time of the whelping.
Oh yes, and my bitch whelped 61 days after the first mating. Two days before the 63 days, but I presume the size of litter may have hurried things on a bit.
All the best, and let us know how it went...
Tanya