Happy Dog Supreme Young - Junior Lamb and Rice... From 7 months onwards, the food should have a moderate energy and protein content to avoid too-rapid growth. Happy Dog Junior Lamb and Rice has the ideal energy and protein content for young dogs. The tasty, poultry-free recipe containing lamb, highly-digestible rice and nutritious New Zealand mussels is even suitable for sensitive young dogs. The unique loop shape makes the biscuits particularly easy to digest. The Happy Dog Natural Life Concept supplies dogs with all the ingredients that will benefit their bodies holistically. Once they reach 18 months, they should be gradually changed over to a Happy Dog Adult food, such as New Zealand.