well Riot has been on Fromm Duck and Potato, EVO RM, California Natural (Lamb puppy), Reg Innova Adult, Wolf Cub(Solid Gold), Wellness.
The one that actually KEEPS weight on him is the California Natural. Its the only one that has successfully kept his weight and allowed him to gain muscle and KEEP his original mass.
He current weighs in at 25kg and on the EVo RM he was weighing around 22kg(too light for him).
I know its not grain free - but it is still an awesome food. Everytime Riot has tried a different food his weight drops.
hes such HIGH energy and burns fat off so quickly lol Its the only thing that works for him - especially in swimming season when hes in the water just about every other day!