Oregon Revised Statutes Animals § 607.010

(1) An elector who desires to create a livestock district may petition the county court or board of county commissioners to hold an election for such purpose. The petition shall be filed with the county clerk of the county wherein the district is sought to be created, shall set forth the name by which the proposed district is to be designated, and shall describe the boundaries thereof.

(2) The petition shall contain the signatures of six or more electors from each precinct, or portion of precinct, included within the boundaries of the proposed district; but in no case shall the petitioners be required to obtain the signatures of more than 100 electors. No person shall sign the petition unless the person owns real property within the proposed livestock district.

(3) The proposed livestock district shall contain not less than 2,000 acres.

(4) The petition shall state what livestock or class or classes thereof are not to be permitted to run at large within the proposed livestock district. A class of livestock may be further designated or described by minimum or maximum age limits or by breed.