Happy dog supreme young medium junior is a complete feed for young medium breed dogs from 6 to 18 months of age phase 2 too fast growth is a common problem in this phase which can lead to obesity and joint problems which can continue even into the adult years this dry food therefore contains reduced energy content and a protein content of 25 tasty poultry and aromatic salmon provide animal proteins and sufficient energy this helps prevent overfeeding and all the problems that go along