What importance do breastfeeding give to the infants compared with that infant formula milk?

It isn't good for a puppy to have to much dairy at all, but it depends on how old your pup is. if it's still in need of a breast milk supplement i recommend picking up some puppy milk from your local...

There are many brands of Infant formula... Name Brands such as Enfamil, Gerber, and Similac which can be VERY expensive, or Store Brands such as Babies R Us, Target Up&Up or Walmart's Parent's...

Infant formulas that approximate human milk are fed to infants all over the world, sometimes as their sole source of nutrients during the first months of life

It will not hurt them.. Unless they have a serious injury like a torn rotator cuff. the pain reliever will only make it worse as the puppy will feel better.

of course they are like humans