Abstract: A leash is described. It includes a length of strap extending between a first and a second end along a longitudinal axis. The strap is folded along the longitudinal axis to form a loop. The leash also includes a strap length adjustment mechanism attached to the strap intermediate the loop and a terminating end of the strap, wherein the terminating end is attached to attachment hardware configured to reversibly receive a collar of an animal. The adjustment mechanism has a length fixing configuration and an adjustment configuration, wherein the length fixing configuration is configured to prevent changes in the lengths of the loop of strap and the length of slack strap, and wherein the adjustment configuration is configured to allow for adjustment of the diameter of the loop of strap and the length of slack strap.