Wyo. Stat. § 6-3-105: Negligently burning grounds; penalties.

(a) A person is guilty of a misdemeanor punishable by imprisonment for not more than six (6) months, a fine of not more than seven hundred fifty dollars ($750.00), or both, if he, without permission of the owner and acting with criminal negligence:

(i) Sets fire to any grounds or to anything on any grounds which is the property of another; or

(ii) Allows a fire to pass from the owner's property or grounds to the injury or destruction of any property of another.