Breast milk is a liquid produced by a human mother after childbirth. Its primary purpose is to feed her newborn infant, but a lactating mother can also continue to feed other infants or harvest breast milk after her own infant has been weaned. While many animals produce milk, when a person refers to a substance as breast milk, it is safe to assume that he or she means human breast milk, as the milk of other animals is always referred to with the name of the animal that produced it. It is typical for human children to breast feed for at least the first six months of their lives, although many feed longer.
