Yes, it is achievable to get papers for your Puppy that's now an adult, but the procedure could be additional complex and time-consuming than registering a Pup. Grownup canine can be registered with a kennel club or registry, even so the operator should deliver documentation that proves the Doggy’s breed, https://www.openpr.com/news/4286965/how-to-get-papers-for-a-dog-the-complete-step-by-step-guide