[Code of Federal Regulations] [Title 7, Volume 6] [Revised as of January 1, 2008] From the U.S. Government Printing Office via GPO Access [CITE: 7CFR500.10] [Page 378] TITLE 7--AGRICULTURE CHAPTER V--AGRICULTURAL RESEARCH SERVICE, DEPARTMENT OF AGRICULTURE PART 500_NATIONAL ARBORETUM--Table of Contents Subpart A_Conduct on U.S. National Arboreturm Property Sec. 500.10 Pets. Pets brought upon USNA property must have proper vaccinations and, except assistance trained animals, must be kept on leash at all times. The release or abandonment of fish, plants, and animals of any kind on USNA grounds is prohibited.