Can any one tell me what the best food is for putting weight on. Ollie is 18 months old and too skinny, the vet said he could do with putting some weight on. Our other cocker actually needs to lose weight but we are managing that. Ollie is fed on James Wellbeloved and I have increased this too quite a bit more than I feed Buster. Wish I had the problem of needing to put weight on.