In making any inspection of any animals prior to shipment by rail, truck, or other conveyance or removal from the state, if any inspector finds any animals bearing marks and brands other than those of the owner of the other cattle in said shipment and if said owner or shipper fails to exhibit a bill of sale or other authority for the possession of said animals in said shipment, the inspector shall forthwith declare them to be estrays and shall take possession of the same for the state board of stock inspection commissioners and dispose of the same according to the rules and regulations prescribed by said board.
C.R.S. § 35-53-107