N.J. Stat. § 4:20-9
The place where a partition fence is or shall be made, between adjoining lands both used for the pasturage or the keeping of animals, shall be equally divided, regard being had to the quantity of fence necessary and other conveniences of fencing and each party shall take an equal share of such fence to make or amend and maintain, so that it may be known which part thereof is his own.
When the parties cannot agree in making the division, then any 2 members of the township committee of the township where the lands lie or any 2 members of the board or body having control of the streets in any other municipality, who are disinterested, shall, upon application of either party and in the presence of the parties if they will attend, make such division. Such determination shall be delivered to each of the parties in writing and be binding upon them and the succeeding owners and tenants of the lands.
N.J.S. § 4:20-9