An apparatus to prevent a canine from reaching a top of a fence, may comprise first and second members secured to first and second points on or adjacent to the fence, the first and second members comprising cable couplings spaced apart from the points on the fence by predetermined distances. A longitudinally flexible sheathing member may surround a flexible cable. The flexible cable may have a first end engaging the cable coupling of the first member and a second end engaging the cable coupling of the second member, wherein the sheathing member and the flexible cable hang between the first and second member cabling couplings. A system and kit including the apparatus are also described.
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