The document discusses the International Commission on Zoological Nomenclature (ICZN), the body that establishes and maintains the international rules for naming animal species. It outlines the ICZN's role in revising and publishing the International Code of Zoological Nomenclature, considering cases of nomenclatural uncertainty, and ruling on specific naming cases. It also briefly discusses some of the principles and challenges in zoological nomenclature, including priority, homonymy, and typification.