Abstract: A reciprocating leash to walk animals. The leash includes a handle, a slip zone, and a cord. The slip zone is located at a cord end of the handle. The cord is located in the slip zone. A middle portion of the cord is defined between a left stop and a right stop. A left end portion of the cord is defined from the left stop to a left end of the cord and a right end portion of the cord is defined from the right stop to a right end of the cord. The middle portion passes through the slip zone and is movable in and out of the slip zone through a range of travel limited to between the left stop and the right stop. The left end and the right end each include an end clip to repeatably be connected to and released from animals.