Missouri Revised Statutes Title XXXVIII. Crimes and Punishment; Peace Officers and Public Defenders § 578.007. Acts and facilities to which section 574.130 and sections 578.005 to 578.023 do not apply

(1) Care or treatment performed by a licensed veterinarian within the provisions of chapter 340;

(2) Bona fide scientific experiments;

(3) Hunting, fishing, or trapping as allowed by chapter 252, including all practices and privileges as allowed under the Missouri Wildlife Code;

(4) Facilities and publicly funded zoological parks currently in compliance with the federal “Animal Welfare Act” as amended;

(5) Rodeo practices currently accepted by the Professional Rodeo Cowboy's Association;

(6) The killing of an animal by the owner thereof, the agent of such owner, or by a veterinarian at the request of the owner thereof;

(7) The lawful, humane killing of an animal by an animal control officer, the operator of an animal shelter, a veterinarian, or law enforcement or health official;

(8) With respect to farm animals, normal or accepted practices of animal husbandry;

(9) The killing of an animal by any person at any time if such animal is outside of the owned or rented property of the owner or custodian of such animal and the animal is injuring any person or farm animal but shall not include police or guard dogs while working;

(10) The killing of house or garden pests; or

(11) Field trials, training and hunting practices as accepted by the Professional Houndsmen of Missouri.