Weruva Wx Phos Focused Freeze Dried Chicken Breast & Tilapia Formula Cat Food TopperFeaturing naturally low phosphorus proteins like boneless, skinless white breast meat chicken, tilapia and egg whites, our fully cooked freeze dried formula is designed for high palatability while helping to maintain muscle mass. With up to 50% less phosphorus than AAFCOs minimum levels, Weruva Wx Phos Focused formulas are intended for intermittent or supplemental feeding, providing essential nutrition for cats in need.