The invention provides a harness for animal, which can prevent ropes wound around the animal in circular shape for holding from generating torque and excessive force applied onto ropes for connection when the force of pulling the animal is applied rearwards. The harness for animal comprises composite connection rings (5, 6) equipped with cross connection portions (13, 13); ropes for holding (3, 4), which are arranged in a pair at the front and the rear sides of the front feet (2b) of the animal (2) facing the back portion from the chest, two end portions on one side and two end portions on the other side respectively pulled to the side of the composite connection ring (5, 6) spaced by the cross connection portion (13, 13); ropes for connection (11, 12), having base end portions connected with the other sides (5b, 6b) of the composite connection ring (5, 6), and front end portions provided with connection rings (8, 9) in connection with the pulling rope (7) and the fastening rope not illustrated; and ropes for connection, having base end portions respectively in connection with each of cross connection portions (13, 13), and front end portions provided with a connection piece (14) for connecting and eliminating connection. Thus, the object is achieved.