All six pups were "large" at birth. Number 4 had a particularly difficult time, and had us all concerned. He's lost weight, whereas all the others are gaining weight. It appeared that he hadn't figured out how to open his mouth at feeding time and, if given help, he couldn't hang on, then would fall asleep. Chris bottle fed him this.morning, and this afternoon I took him to the vet. It seems that he has a crushed sternum, thanks to that tough birth. He also has some other unknown (undetectable) internal damage, resulting in rectal bleeding. He was dehydrated, and the vet treated that. He was also "cold", so we've taken additional steps to keep him warm.
Chris and I will be taking turns at bottle feeding tonight. The breeder and the vet will.make a tough call tomorrow.