To provide a connecting structure of a pet circle capable of improving assembling workability, a pet circle, and a connecting pin for a pet circle.SOLUTION: The pet circle 1 comprises a first end decorative cover 60 mounted on the end of one of the crosspieces 21 constituting the circle main body 2 and an end portion of the other lateral crosspiece 51 constituting the circle main body 2 , The second end decorative cover 70 mounted on the first end decorative cover 70 and the connecting part between the adjacent first and second end decorative covers are laid in a superposed state and are embedded in the overlapped connecting part, And a connecting pin 80 that connects the connecting pin 80.(FIG.【課題】組み付け作業性を向上し得るペットサークルの連結構造、およびペットサークル、並びにペットサークル用連結ピンを提供する。【解決手段】ペットサークル1は、サークル本体2を構成する一方の横桟21の端部に装着される第一端部化粧カバー60と、サークル本体2を構成する他方の横桟51の端部に装着される第二端部化粧カバー70と、隣接する第一および第二端部化粧カバー相互の連結部を重ね合わせた状態で且つ重ね合わせた連結部内に埋設された状態で相互を着脱可能に連結する連結ピン80と、を備える。【選択図】図1
