An electrifiable heating blanket for patients, particularly including small animals, undergoing surgery. Heating of the blanket is varied in accordance with patient body temperature changes. Control of the heating is provided by a control unit made accessible to a care giver (surgeon or assistant), and blanket temperature is varied by increasing/decreasing electrical current flow to the blanket via the control unit. A primary conductor path is provided from the electrical source to a base control unit and from the base control unit to the blanket covering the patient. The invention provides a secondary conductor path from a position along the primary conductor path and independently extended to a position of convenience to the surgeon or assistant. An electronic break out feature is provided at the point of diversion enabling electronics push button control from the hand control.