CFR›Title 9›Chapter I›Part 151›Subject Group Definitions ContainsSection 151.1CorpusDaily eCFRDisplayed edition2026-05-21Last updated2026-05-21 Sections 151.1 § 151.1 Definitions. Previous Certification of Purebred Animals Certification of Purebred Animals Next Recognition of Breeds and Books of Record Recognition of Breeds and Books of Record