I have 3 cats. I've been feeding them Purina ONE Advanced Nutrition Hairball Formula since my youngest cat turned 1. The eldest cats have been inactive mostly since they turned 1, and now the youngest seems to be gaining weight, though she is more active. I haven't noticed the cats eating more though, I usually put about 3 cups of food at a time, and usually I need to add food every 2 days or so, so I know they aren’t eating more than a cup each every couple of days, and the label states that each day they should be fed about 3/4 to 1 cup per day. I'm thinking about changing their food to the Healthy Weight Formula. Will that maybe make the cats more active? I mean in addition to more exercise. Any advice would help.
