My vet has always been right. THis last litter I thought that there had to be more than the 4 that we saw on the x-ray, because she was so big. She is right at 6 3/4 lbs - 7 lbs. not preg. and sure enought she has 4 puppies, but they were really big. 6 and 7 oz. Needless to say this will be her last litter, when these puppies are gone she will be spayed. It seems that with each litter that she had the puppies grew bigger. The first litter she had 4 and they were 4 and 5 oz., the second she had 3 5 and 6 oz. and this litter 6 and 7 oz. It was a hard delivery so don't want to take any changes with another litter. By the way congratulations on you new litter. Keep us posted. Can't wait to see new puppy pictures.
Debbie