Abstract: A protective apparatus to reduce the likelihood that livestock, especially a horse or a cow, will have a limb trapped in the opening between two adjacent fence panels having upper horizontal elements and closely-spaced vertical riser elements. The apparatus includes a U-shaped spanning member that is received over and extends between the upper elements of adjacent fence panels. The apparatus also includes a tail depending from the spanning member and a pair of riser engaging members that extend outwardly on opposite sides of the tail member and in vertical spaced relation to the spanning member. The riser engaging members are sized and shaped to receive respective riser elements of adjacent fence panels.