Abstract: A simulated calf body is provided with a forward head and front-to-rear swinging rear legs. The body is guidingly supported for movement along a predetermined path and includes forward ground engaging support and drive wheel structure driven by a motor supported from the body, the motor also being drivingly connected to the rear legs for front-to-rear swinging thereof. The drive connection between the rear legs and the motor and the head each include motor control structure for terminating operation of the motor in the event a rope loop is properly placed about the head or engaged about the rear legs and has a rearward pull exerted thereon.