Helps support a healthy heart and immune system. New and improved shapes. Bite-sized morsels kittens love. Formulated with a smart blend of nutrients for healthy overall development. Includes the ulti-pro enhanced protein system to help maintain a healthy heart and immune system. Delicious chicken & turkey flavors encourage a healthy appetite. Purina Kitten Chow helps nurture your kitten from the start with everything she needs for optimal growth and development. It contains the Ulti-Pro Enhanced Protein System to help maintain your kitten's immune system and support proper muscle development, including a healthy heart. To help ease the transition to adult food, both Purina Kitten Chow and Purina Cat Chow Complete Formulas start with the same great-tasting ingredients and have similar nutritional profiles so there's less chance of stomach upset. Growing up happy and healthy - that's the Purina Cat Chow Way of Life. Ask a Purina Cat Chow Mentor: Q: What's the best way to start feeding my kitten a dry food? A: Normally, kittens will begin sampling solid food around 3 or 4 weeks and be fully weaned from their mother by 7 weeks of age. When introducing a kitten to dry food, try moistening it with a little water to make it easier to eat. As she grows, follow the feeding instructions on the bag. Around her first birthday, you'll want to think about switching from Purina Kitten Chow to an adult formula like Purina Cat Chow Complete. It has a similar nutritional profile so there's less chance of digestive upset during the transition period. - Dr. Steffen Runquist, DVM Purina Cat Chow Mentor. Animal feeding tests using Association of American Feed Control Officials (AAFCO) procedures substantiate that Purina Kitten Chow Nurturing Formula provides complete and balanced nutrition for all stages of cats.