So where do sporting dogs fall on this matrix? Guess it depends on your particular style of hunting. I could see a retriever who spends a lot of time between retrieves in a duck blind perhaps needing a little less protein. I'm not sure I could see the same for an upland dog or hound, where long periods of running and activity are the norm. If nothing else, this study will add one more facet to the never-ending debate over what, how, how much and when to feed your dogs.