Wyo. Stat. § 14-6-713
Nothing in this act shall be construed to prevent the emergency removal of an Indian child who is a resident of or is domiciled on a reservation, but temporarily located off the reservation, from his parent or Indian custodian or the emergency placement of the child in temporary protective custody or shelter care under state law in order to prevent imminent physical damage or harm to the child. The applicable state agency involved shall ensure that the emergency removal or placement terminates immediately when the removal or placement is no longer necessary to prevent imminent physical damage or harm to the child and shall expeditiously initiate a child custody proceeding subject to this act, transfer the child to the jurisdiction of the appropriate Indian tribe or restore the child to the parent or Indian custodian, as may be appropriate.
W.S. 14-6-713