CFR›Title 9›Chapter I›Part 4 ContainsSubparts A–BCorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 PART 4—RULES OF PRACTICE GOVERNING PROCEEDINGS UNDER THE ANIMAL WELFARE ACT Subparts A Subpart A—General Section 4.1 B Subpart B—Supplemental Rules of Practice Sections 4.10–4.11 Authority7 U.S.C. 2149 and 2151; 7 CFR 2.22, 2.80, and 371.7.Source42 FR 10959, Feb. 25, 1977, unless otherwise noted. Previous 3 Part 3—Standards Next 11 Part 11—Horse Protection Regulations