ROYAL CANIN® Jack Russell Puppy dry food is suitable for jack russell puppies up to 10 months of age. This complete food has been specially developed with all nutritional needs in mind.Puppies of the Jack Russell Terrier breed have a short, intense growth period and an active and lively temperament. This food has therefore been designed to help promote harmonious growth, thanks in particular to an adapted content of energy, protein, calcium and phosphorus. The feed contains antioxidants - including the highly beneficial vitamin E. The presence of these antioxidants helps to support your puppy's natural defences as its immune system gradually develops. Facts about Royal Canin Jack Russell Puppy:Food for puppies of the jack russell terrier breed.Antioxidant complex supports your puppy's natural defences.With prebiotics to support digestive health.Adapted in shape, size, texture and composition.