Surprisingly, it is sometimes difficult to find the best dog food for Goldendoodle puppies, given how easy it is to buy dog food that is formulated for larger dogs. Of course, manufacturers of dog food will also advertise their products as being ideal for both large and small dogs. However, this may not always be true. A Goldendoodle puppy will eat much less than an adult breed of similar size, so it may prove necessary to find a brand or product that offers nutritional formulas that are made specifically for small dogs.