Yes, it can be done to receive papers for just a Canine that is previously an adult, but the method may be extra complex and time-consuming than registering a Puppy dog. Adult puppies is usually registered that has a kennel club or registry, nevertheless the operator have to give documentation https://www.openpr.com/news/4286965/how-to-get-papers-for-a-dog-the-complete-step-by-step-guide