7 U.S. Code § 2141

7 U.S. Code § 2141 is about Marking and identification of animals. It is under Chapter 54 (Transportation, Sale, And Handling Of Certain Animals) of Title 7 (Agriculture) of the Code.

All animals delivered for transportation, transported, purchased, or sold, in commerce, by a dealer or exhibitor shall be marked or identified at such time and in such humane manner as the Secretary may prescribe: Provided, That only live dogs and cats need be so marked or identified by a research facility.