Okla. Stat. tit. 4, § 4-154: Lawful fence - Construction - Material - Height -

Tightening.

A fence made of three rails of good substantial material, or

three boards not less than six (6) inches wide and three-quarters

(3/4) of an inch thick, such rails or boards to be fastened in or to

good substantial posts not more than ten (10) feet apart where rails

are used, and not more than eight (8) feet apart where boards are

used, where either wholly or in part substantially built and kept in

good repair, or any other kind of fence, which, in the opinion of

the fence viewers shall be equivalent thereto, shall be declared a

lawful fence: Provided, that the lowest or bottom rail, wire or

board shall not be more than twenty (20) or less than sixteen (16)

inches from the ground, and that such fence shall be fifty-four (54)

inches in height, except that a barb wire fence may consist of three

barb wires, or four wires, two of which shall be barbed, the wires

to be firmly fastened to the posts not more than two (2) rods apart,

with two stays between the posts, or with posts not more than one

(1) rod apart without such stays, the top wire to be not less than

fifty-four (54) nor more than fifty-eight (58) inches in height, and

the bottom wire to be not more than twenty (20) or less than sixteen

(16) inches from the ground: Provided, further, that all partition

fences may be made tight at the expense of the party desiring it,

and such party may take from such fence the material by him added

thereto whenever he may elect: And provided, further, that when the

owner or occupants of adjoining lands both use the fence for the

purpose of restraining swine, goats or sheep, each of said owners or

occupants shall keep their respective share of the partition fence

sufficiently tight to restrain such sheep, goats or swine.