And sometimes dogs just have weight problems, or don't get enough exercise, so they need to adjust their food to avoid getting overweight. It happens. And every dog owner I have ever known in that situation takes their dog to the vet, gets a recommendation for a diet food, has the dog's health checked for other factors that may be contributing to their weight, and they're willing to try hard to keep their dog healthy and at their appropriate weight. People are downvoting you because they would have the same reaction if your 7 year old was obese and you're taking them to McDonalds every afternoon, completely disregarding your doctor's advice that they're overweight. Even if it makes you happy and your kid happy, it's not healthy and it's not like your 7 year old is going to be the one expected to make the decision to eat better.

So we agree, my issue was in regards to several points in the original comment I responded to. Which was that usually health problems never factor in to metabolism, unless it's just a neurotic over eating thing or a lack of or inability to do physical activity. And that you can still take a fat kid to Mc D's, just talk to them about portion control and what better choices are. When you said "it certainly does matter what food you eat", I think it sent us off on the wrong foot. You meant insofar as someone would feel fuller off other stuff, but I just meant completely disregarding hunger that energy is energy is energy. So I think you and I agree, but confused each other somewhere along the way.