I did see on Burns packaging that it does suggest to put pups on Burns adult food at 6 months. Hence, I did buy the adult (duck flavour) for Blod (we tried her on Burns for a short while but she wasn't very interested in it after being on Royal Canin). If you would like it Jo, we have a air tight container (almost full pack) of adult duck Burns that might be useful for you. We could drop it off for you. The adult Burns looks no different, just bigger pieces and obviously duck flavour. Blod is back on Royal Canin as her brother is on it, and she just seems to prefer it.