What most naturally follows?

How to ensure passive immunity in newborn puppies
Watch the newborn puppies closely.
In general, newborn puppies can easily find their mothers' nipples and begin nursing. However, some newborns may have more trouble nursing.
Because colostrum is vital to a newborn puppy's survival, and is available for only a short time after birth, each newborn puppy will need to start nursing almost immediately after birth. Watch each newborn puppy to see which ones are nursing and which ones are not.