My dog had her second litter of puppies, just the one, this was her second littler, her first was a litter of 6, although I used a different stud does anyone know why she had just the one and would it happen again?
Sometimes dogs have lots of puppies, sometimes they have a few puppies, sometimes they have one puppy. No one can tell you for sure why she only had one and if it will happen again. Ask your mentor about it (you have a mentor, right?).