Giant dogs take around 18-24 months to reach their adult weight of 45 kg. During this time, their nutritional needs evolve, so we have developed two diets: Royal Canin Giant Puppy, to be fed between 2 and 8 months, and Royal Canin Giant Junior, for the period of 8 to 18/24 months. During your giant-breed puppy's intense growth period, they need enough calories and the right nutrients to grow healthily. This is a time when your puppy's bones, muscles, senses and nervous system are developing. 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) and highly-digestible proteins support balance in the gut flora for healthy digestion. Royal Canin Giant Puppy at a glance: Complete dry food for giant breed puppies (expected adult weight 45kg+) aged between 2-8 months Controlled energy content: to support a puppy's intensive growth phase Strong immune system: contains a nutrient complex including vitamins C E Supports the microbiome: also suitable for sensitive digestive systems Healthy bones joints: thanks to a tailored mineral content Tailored kibble shape: tailored to the jaws of extra large puppies The kibble of this Royal Canin Giant Puppy has been specially developed for the large jaws of giant breed puppies, making it easy to pick up and chew.