designer breed papers
https://wiki-fusion.win/index.php/What_to_Know_About_Aussiedoodle_Registration_for_Your_Designer_Dog
These designer breed papers are the official documentation you get when registering a purposely crossbred dog with a kennel club. They list the parent breeds, the new breed name, and the puppy's lineage, often used to show a dog is from a specific designer line like a Labradoodle or Cockapoo. Owners keep them for pedigree records or to prove the dog's intentional mix for shows or breeding.