PRO PLAN PUPPY OPTISTART DIGESTIVE SYSTEM

Within 24 hours of birth your puppy's digestive system will double in weight*. By the age of 3 weeks the amount of enzymes in his digestive system will have increased several times since birth. Naturally, as he grows he will find it easier to digest food.

* Reference: Heird WC, Schwarz SM, Hansen IH (1984) Paediatric Res 18: 512-515.