Precisely formulated to support optimal growth and development. Supports bone development. Ready-to-use. Liquid formula. Precisely formulated to support a puppy's bone development - with calcium. Optimal growth - with essential vitamins. Hartz Precision Nutrition Milk Replacer for Puppies can also be used as a food supplement for the mother while pregnant and nursing her puppies or for convalescing dogs. This product is intended for intermittent or supplemental feeding only. Hartz Precision Nutrition Milk Replacer for Puppies should be served warm (room or body temperature). Do not heat formula because milk may be too hot. To warm the formula, pour the desired amount into the Hartz Precision Nutrition Pet Nursing Bottle, and then place the bottle in a warm water bath. Before feeding, test temperature of milk by squeezing a drop on your arm. It should feel comfortably warm.