During the intensive growth phase, your giant breed puppy needs sufficient calories and the right nutrients to support healthy development, as this is the time when bones, muscles, senses and nervous system all develop. Royal Canin Giant Puppy contains tailored nutrients that support this important growth and help to avoid excessive weight gain. The recipe of this Royal Canin Giant Puppy contains balanced levels of minerals such as calcium and phosphorus, in order to ensure the development of strong, quick-growing bones. During this time, the levels of antibodies from mother's milk begin to dwindle in your puppy. This means that your puppy requires optimum protein to help develop its own immune system. Nutrients such as vitamins C and E help to support the body's natural defences as effectively as possible. Extra large breed dogs often have a sensitive digestive system and can suffer with diarrhoea and flatulence. A combination of beneficial prebiotics (such as FOS, MOS and beet pulp)