Colo. Rev. Stat. § 35-53-117
Any duly authorized inspector, sheriff, deputy sheriff, or peace officer is authorized to stop and inspect any motor or other vehicle transporting or containing livestock, or the carcasses thereof, and demand from the person operating said motor or other vehicle the exhibition of a bill of sale, permit, or certificate. If any person who transports or who has in possession said livestock, or the carcasses thereof, is unable to exhibit to such inspector or peace officer said bill of sale, permit, or certificate, said inspector or peace officer is empowered to arrest, with or without warrant, any such person operating said motor or other vehicle, to take possession of the same and the livestock, or carcasses therein, and to retain such possession until the person operating such motor or other vehicle can produce satisfactory evidence that he, or the person, firm, or corporation for whom the same is being transported, is the lawful owner thereof or until such livestock, or the carcasses thereof, are disposed of as provided in sections 35-53-118 and 35-53-119.
C.R.S. § 35-53-117