Wyo. Stat. § 11-19-401: Tagging, branding and disposition of cattle reacting to test; penalties for failure to comply.

All livestock animals in Wyoming reacting to a confirmatory test for brucellosis (Bang's disease) may be immediately permanently branded with a hot iron letter "B" on the left tailhead by or in the presence of an officially authorized veterinarian. All such reactor livestock animals shall be disposed of for slaughter or diagnostic purposes only, upon and according to written instruction from the Wyoming livestock board. Any person who violates any provision of this section shall be punished as provided in W.S. 11-1-103. As used in this section, "confirmatory test" means a test for brucellosis that has the specificity and sensitivity to verify the presence or absence of brucella abortus in animal serum or tissues and is used to confirm results from an initial brucellosis test.