"Sec. 3   RCW 16.57.160 and 2003 c 326 s 18 are each amended to read as follows:
     The director may adopt rules:
     (1) Designating any point for mandatory inspection of cattle or horses or the furnishing of proof that cattle or horses passing or being transported through the point have been inspected or identified and are lawfully being transported;
     (2) Providing for self-inspection of ((fifteen)) twenty-five head or less of cattle;
     (3) Providing for issuance of individual horse and cattle identification certificates or other means of horse and cattle identification; and
     (4) Designating the documents that constitute other satisfactory proof of ownership for cattle and horses. A bill of sale may not be designated as documenting satisfactory proof of ownership for cattle."