5-109. Identification of animals; exemptions No horse or dog shall take part in any race conducted under this article unless satisfactorily identified and registered by an association recognized by the department. A horse shall not be allowed to leave the racetrack premises unless it is accompanied by the certificate required by section 3-1335 unless: 1. An emergency situation requires immediate removal of the animal from the premises. 2. The director of the Arizona department of agriculture issues special permission in situations he determines to be in the best interest of the animal.