How to Get Registration Papers for a Dog Without Breed Documents
https://moderndoglife.clearminster.com/posts/how-to-get-registration-papers-for-a-dog-without-breed-documents
If you've adopted a stray or lost your dog's breed papers, start by checking local animal control or shelter policies. Many allow microchip records or a vet-written letter confirming rabies vaccination as substitutes. You may need a notarized affidavit from someone who knows the dog's origins, or a canine DNA test. Contact your county's licensing office directly—they'll explain what documents they accept in lieu of breed registration.