PROBLEM TO BE SOLVED: To provide a harness for an animal facilitating mounting an animal wheel chair on a quadruped animal.SOLUTION: A harness for an animal includes: front side parts 10 which have a trunk band part 11 wound around the trunk of a dog D, a trunk band adjustment part for adjusting a length in the circumferential direction of the trunk band part 11, a first connected part 13 detachably connected to a first connection part 108 provided in an animal wheel chair 100, a breast pad part 14 covering the front face of the breast of the dog D, and a coupling part facing the abdomen of the dog D; and rear side parts 20 which have a lumbar band part 21 wound around the lumbar of the dog D, a lumbar band adjustment part of adjusting a length in the circumferential direction of the lumbar band part 21, a second connected part detachably connected to a second connection part 109 provided in the animal wheel chair 100, a pair of leg support parts 24, 24 supporting the roots of the hind legs of the dog D, and a coupled part coupled to the coupling part so as to change a coupling position in the front-rear direction.SELECTED DRAWING: Figure 1B【課題】四足動物に対して動物用車椅子を容易に装着することができる動物用ハーネスを提供すること。【解決手段】犬Dの胴部に巻回される胴輪部11と、胴輪部11の周方向の長さを調整する胴輪調整部と、動物用車椅子100に設けられた第1接続部108に着脱可能に接続される第1被接続部13と、犬Dの胸部前面を覆う胸当て部14と、犬Dの腹部に対向する連結部と、を有する前側パーツ10と、犬Dの腰部に巻回される腰輪部21と、腰輪部21の周方向の長さを調整する腰輪調整部と、動物用車椅子100に設けられた第2接続部109に着脱可能に接続される第2被接続部と、犬Dの後肢の付け根を支持する一対の脚支持部24,24と、連結部に対して前後方向の連結位置を変更可能に連結される被連結部と、を有する後側パーツ20と、を備えた構成とした。【選択図】図1B