Small rodent treadmills are used for forced exercise training and accurate testing of fatigue in mouse and rats. The treadmill is a popular exercise system used to force-train rodents. The apparatus has a simple construction and provides the experimenter the ability to vary speeds and inclinations of the runway belt. Orchid’s Treadmill system utilizes shock grids to motivate the animal to keep running. The same device is suitable for tests on either rats or mice. Orchid’s Treadmill is a compact and user-friendly device with control unit having 7” touch screen display. Speed can be selected from 1 to 100m/min, in steps of 1m/min and also has different modes like constant, acceleration, de-acceleration and multistep mode. Orchid’s Treadmill also has a shock grid to deliver a mild electric shock, when an aversive stimulus is required. Shock can be preset from 0 to 2.5mA (in 0.1mA steps), with a selectable frequency of 1, 2 or 3 Hz. The running-lane assembly can be manually tilted from -25° to +25°, in 1° inclination. Experiment data can be transferred to the software specially designed for Rodent treadmill with features as experiment title, graphical presentation and report generation.