Royal Canine #28 starter for Mother & baby is the food most all of pups are on. You can find it at virtually every pet supply store but some pet supply chains carry the right blend, wrong kibble size. If you don't want to worry about an specific store inventory for your pup's tiny kibble we suggest Chewy, or Amazon so it comes to your doorstep. Plus there's no lugging the food from store to car to house :)