8 mos old is still on Royal Canine medium size puppy as recommended by vet. Very interested in how you change up their food. Glad to hear that because I would like to change him from chicken based to something else as adult. Had always been advised not to keep changing food as it was hard on their system. Breeder advised to use high protein and fat dog food (60% protein, 30% fat). What is your opinion on this? I am starting to add 1/2 tsp coconut oil daily to dog food for winter feeding. Advised it had ingredients similar to mother's milk. What say you about this?