An animal exercise device that is suitable for mounting to a vehicle. A flexible pole is mounted to the vehicle and extends from a side of the vehicle and away from oncoming traffic. A lead extension is connected to the flexible pole and to a coupler having a first elastic section and a second elastic section. The first section and second section act as a leash for a first animal and a second animal, respectively. The animal exercise device allows multiple animals to walk or run beside the vehicle. The device is constructed to keep the animals positioned to a side of the vehicle and away from the vehicle.