Can I Give A Puppy Regular Milk. Puppies need particular levels of calcium and phosphorus, and the cow's milk you buy at a grocery store is diluted and doesn't contain the proper levels. But your dog gets these from his regular food anyway.
Many dogs can't process milk, a condition known as lactose intolerance. “puppies generally have the enzyme in abundance as it is used to breakdown their mother's milk while nursing.”. Even though newborns require nothing but milk until they are circa 3 months old, their little stomachs will not take kindly to regular milk.