FORMULATED FOR PUREBRED JACK RUSSELL TERRIERS: Royal Canin Jack Russell Terrier Puppy Dry Dog Food is designed to meet the nutritional needs of a purebred Jack Russell 8 weeks to 10 months old SPECIALIZED KIBBLE: This exclusive kibble has been developed to be perfectly adapted to the jaw of the Jack Russell Terrier puppy making it easy to pick up and chew IMMUNE SUPPORT: Helps support puppy development of the immune system and natural defenses with an exclusive complex of antioxidants including vitamin E GROWTH AND DEVELOPMENT: Promotes a small dog’s healthy growth with precise protein content and balanced calcium and phosphorous levels HEALTHY DIGESTION: HEALTHY DIGESTION: High-quality proteins and prebiotics support digestive health and promote optimal stool quality