A pneumatic animal stunner, comprising a housing having a stunning rod therein capable of being driven along a longitudinal axis forward to stun an animal and rearward to retract the stunning rod, a handle having a valve trigger to control flow of pressurized fluid to drive forward and retract the stunning rod, an alert nozzle disposed on the housing for releasing a supply of pressurized fluid, an alert passageway running to and connecting with the alert nozzle to supply the alert nozzle with the pressurized fluid, and an alert nozzle actuator for supplying the pressurized fluid to the alert passageway. Upon engagement of the alert nozzle actuator, pressurized fluid traverses through the alert passageway and releases through the alert nozzle.