Yeah, unfortuantley with a multi cat household it is hard. I have one piggy and I know she needs to loose weight. I am not the perfect cat mom and dont have the time to feed 11 cats at different times. Besides which, I do not feed them wet food. She will just have to be a little overweight. Eukanuba is a very good food. It may help with the weight because they seem to eat less of it. They get more of the nutrients from one serving. If there is just 2 cats, they I might suggest buying a bag of the light formula and a bag of regular and mix them.(They are not fat...they are fluffy)..