Nature. Research. Results. No matter how far science advances us, we always look to nature to inspire us. Purina ONE +Plus Sensitive Systems combines nature and research for results you can see in your cat. That includes a SmartBlend® of high-quality ingredients, plus prebiotic fibre, for an easily digestible formula that helps nourish sensitive systems. See the results Purina ONE can make in your cat. Purina ONE Cat +Plus Tailored Formulas build on an already solid foundation, creating tailored pet food options that support specific needs like healthy weight, healthy aging, hairballs and more. From energy and immune health to strong muscles, including a healthy heart, these high-quality formulas combine nature and research for results you can see in your cat. Try dry food options from veterinarian recommended Purina ONE today.