: For unregistered puppies, the breeder must provide a Registration Application (e.g., from the American Kennel Club ).

When buying a dog online, "papers" usually refers to official registration documents that prove a dog's pedigree, health lineage, and ownership history. Most reputable breeders provide these as part of a Puppy Pack at the time of sale. Official Registration & Ownership

: A document showing 3–5 generations of the dog's family tree. You can also purchase Certified Pedigrees online if they are lost or missing.