Wyoming Statutes Title 18. Counties § 18-5-319. Fencing requirements for subdivision permits

(i) The subdivider shall be responsible for the construction of a perimeter fence on any part of the subdivision that is adjacent to lands upon which livestock can be legally run at large unless a legal perimeter fence already exists at that location or all adjacent landowners' consent that a perimeter fence is not necessary;

(ii) The perimeter fence required under this subsection shall be a lawful fence as prescribed by W.S. 11-28-102;

(iii) The subdivider shall be responsible for all costs of the original construction for the perimeter fence.

(i) Be responsible for the costs of maintaining the perimeter fence provided that the adjoining landowner shall be responsible for half of the costs of maintaining the perimeter fence, not to exceed the reasonable costs to maintain the fence if the fence was a fence under W.S. 11-28-102(a)(i);

(ii) Not be liable for any damage caused by or arising from livestock pastured on adjoining land that may breach the perimeter fence and wander on the subdivided land, provided that the perimeter fence is maintained in accordance with this section.