The protein content in cow milk is

The protein content in cow milk is 3.6%.
Milk is a white liquid food produced by the mammary glands of mammals. It is the primary source of nutrition for young mammals before they can digest solid food. Milk contains many nutrients, including protein and lactose.
Milk is an emulsion or colloid of butterfat globules within a water-based fluid that contains dissolved carbohydrates and protein aggregates with minerals. Total protein content of bovine milk is approximately 3.6% by weight, providing almost 38% of the total solids-not-fat content of milk, and about 21% of whole milk energy.