How to give cows milk for one year old baby?do we need to dilute cows milk with water?

Straight : Cow milk is basically designed for calves. It is a convenient source of calcium,protein & fats & up to 16-24 oz can be given without dilution/day. More than 24 oz/d can trigger microscopic wounds in the gut with bleeding that eventually leads to anemia. There is generally no problem under that limit. Diluting it can lead to weight loss.