BTRA requires all non-BTRA registered dogs to pass the Wisdom Panel/Mars test and all breeding dogs to be DNA profiled for proof of parentage. They accept registrations from other registries on a case by case bases. We are developing the foundation for the Biewer Terrier and it is critical that it is a strong, healthy, foundation and comes as close to our standard as possible. For a complete set of rules on registering your dog, visit the Biewer Terrier Registry of America web-site.