038-12 Wyo. Code R. § 12-11
(a) General. These Rules are intended to ensure the humane treatment of Roping Event animals "horse and stock" and shall be in effect for all Wyoming Pari-Mutuel Commission approved Roping Events
(b) The Judges shall determine if an animal is fit for competition, following a recommendation of the Veterinarian.
(c) Veterinarian. Refer to Chapter 1 2, Section 2, (b). Chapter 12, Section 3, (c). Chapter 7, Section 11, (a) through (e).
(d) A conveyance or "horse ambulance" must be available and shall be used, where practicable, to remove animals from the arena in case of injury. Animals removed from the arena due to injury shall be placed in a situation as isolated and comfortable as possible to reduce stress.
(e) Any injured animals shall be humanely removed from the arena before continuing the Roping Event performance or slack.
038-12 Wyo. Code R. § 12-11