Here we examine programs and information about microchipping and other forms of dog identification. Permanent identification of dogs, and having that information in an available resource / registry is considered a key component of effective animal control, and is also important in breeding registries. In spite of advances in micro-chipping, this remains an area of challenge. Recent developments in DNA profiling have resulted in organizations putting this forward for more accurate identification of dogs. However, are the limitations and challenges in all identification and registration strategies due to technical and practical concerns, or do human factors play a major role?