If, in the judgment of the rehabilitator, and after discussion with the rehabilitator's veterinarian consultant, an injured, sick, or orphaned animal is incapable of surviving if released to the wild, the animal shall be: Humanely euthanized under the direction of the veterinarian consultant in accordance with Regulation .22 of this chapter; Turned over to the Wildlife and Heritage Service; or Transferred as directed by the Wildlife and Heritage Service. An animal held under the authority of this chapter that is not suitable for release may not be used for scientific, educational, or exhibition purposes. An animal that dies of natural causes, or has been euthanized, shall be: Buried, incinerated, rendered, or turned over to an individual or institution which holds a valid scientific collection permit, or, in the case of a migratory bird, a federal salvage permit; or Submitted to a State laboratory for necropsy. Threatened or endangered species shall be disposed of after approval for disposition is obtained from the Wildlife and Heritage Service. Live or dead animals, or any parts of the animals, may not be sold, bartered, or given away except as provided by this regulation.