43 C.F.R. § 4730.1 Destruction.
Title 43 - Public Lands: Interior
Except as an act of mercy, no wild horse or burro shall be destroyed without the authorization of the authorized officer. Old, sick, or lame animals shall be destroyed in the most humane manner possible. Excess animals for which adoption demand does not exist shall be destroyed in the most humane and cost efficient manner possible.
Title 43: Public Lands: Interior
PART 4700—PROTECTION, MANAGEMENT, AND CONTROL OF WILD FREE-ROAMING HORSES AND BURROS
Subpart 4730—Destruction of Wild Horses or Burros and Disposal of Remains
§ 4730.1 Destruction.

