You'll need to know
when to start weaning the puppies
and how to go about doing that, not only for the health of your pups, but for the mother Golden Retriever's health and comfort as well.
Of course puppy vaccinations need to be given and you will need to decide if this is
something that you will do yourself
or have a vet do for your litter.
To answer the question of, “How long do puppies grow?”, they grow for over a year, closer to a year and a half.
The greatest growth rate is between newborn and 8 weeks of age.
Since most, if not all, of your precious litter will probably be in new homes after this time frame, it is extremely important that you see to it that they are given the best possible start in life!