[Code of Federal Regulations] [Title 9, Volume 2] [Revised as of January 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 9CFR355.1] [Page 409] TITLE 9--ANIMALS AND ANIMAL PRODUCTS CHAPTER III--FOOD SAFETY AND INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE PART 355_CERTIFIED PRODUCTS FOR DOGS, CATS, AND OTHER CARNIVORA; Sec. 355.1 Meaning of words. Words used in this part in the singular form shall be deemed to import the plural, and vice versa, as the case may demand.