Hello, I have a few questions. My first question is how effective are the weight control formulas of dry dog food? I have a golden ret mix who is about 78 lbs but needs to lose lbs and has a tendency to put on the pounds. I was looking into EVO weight diet but noticed it had around a 50% protein. I don't know where I picked this idea up from but does higher protein not good for overweight, moderatley active dogs? My Monty is only a year and a half old but has never acted like a "puppy" even when he was little. He never seems to have much energy (although I dont blame him, I was feeding him Nutro Natural Choice for most of his life, yikes). Anyways, any help would be great! Thanks!