Wyo. Stat. Ann. § 11-20-228

Any vehicle used in the transportation of livestock in violation of this act may be impounded pending determination of the violation by a court. Upon conviction of the owner of the vehicle, or the owner of the livestock being transported, any expense incurred by an authorized officer for towing the vehicle or for feed and care of the livestock is a lien upon the vehicle or livestock until the expenses are paid in full.