Collie Dog Diet Requirements: Your Guide to Feeding Your Collie This recipe features deboned turkey as a lean source of protein with digestible grain-free carbohydrates and a blend of omega fatty acids. It contains calcium and phosphorus for strong bones and teeth with supplemental L-carnitine for lean muscle mass. To start your Collie puppy on the right foot, try this Now Fresh Grain-Free Large Breed Puppy Recipe. This recipe features 100% fresh turkey, salmon, and duck to grow healthy muscles …