NAVHDA utilizes four levels of testing, Natural Ability, Utility Preparatory Test, Utility Test, and The Invitational for assessing the skill level of your dog. In each of these test your dog is judged against a set standard set forth in the AIMS Programs Test Rules and assigned the appropriate score, in the higher levels you and your dog are ... Prizes are awarded on the basis of numerical scores achieved in the test. Each dog that meets or exceeds minimum standards in all areas of work is placed in one of three categories: Prize I, II or III. If all dogs entered in a NAVHDA test perform well, all can receive a prize. Follow the links below to learn more about each test.