At 9 weeks, your puppy needs food that supports rapid growth and development. Specially formulated puppy foods, such as Purina PRO PLAN Puppy, SUPERCOAT Puppy, or Purina ONE Healthy Puppy, are ideal because they are higher in calories, rich in protein, and packed with essential nutrients like DHA for brain development. These products also come in smaller kibble sizes, making them easier for tiny mouths to chew and digest. Avoid feeding scraps of human food, as they can be harmful and lead to poor eating habits. Sticking to a trusted puppy formula ensures your furry friend gets the best start in life.