In my opinion, and that’s all it is, I would change their food. They’ve been on this particular food for a long enough time that you know they are not losing weight. Feeding them at the low end (25% below their intake plus on the low side) could cause health issues of another sort. Recommended guide lines of manufactured dog foods will mean that more or a little less, they will get their nutritional needs from that food given the approx. amount they recommend. If you are always given them less then or at the lowest end of recommendation could possibly lead to nutritional deficiencies.
My suggestion would be go find a 4 or 5 star rated quality food from a reputable company with a moderate to high protein, moderate fat and low carbs and I wouldn’t feed any of the foods on THE list. I checked almost all of those foods earlier today and they are all low in fat and high in carbs.
I may have mentioned that I have three toy breed dogs that I keep on the lean side. I feed them all commercial raw diets. I rotate proteins and brands. Commercial raw dog foods are all very high protein, high fat and low carbs. I don’t have to adjust the amount of food that I feed them going from one to the other commercial raw food because they are all accustomed to high protein and fat diets with low carbs. As a matter of fact there are times that I will feed them more than their normal amounts to get a little more weight on them. My feeding method for them is that I feed them between 2.5% and 3% of their body weight. I bought a cheap digital kitchen scale on Amazon. I think it’s a more precise way of knowing that you’re feeding them the correct amount of food each of them needs. I’ve never liked measuring dry kibble (when I used to feed it to them over three years ago) because not all dry foods are the same exact size so that the cup size will always vary somewhat in the amount your feeding them.
