Abstract: A hibernation enclosure comprising an insulated cabinet and a cooling device to effect cooling and maintain temperature therein at selected temperature values. A control unit is operatively connected to the cooling device having a thermostat for selectively switching the cooling device on and off according to preselected temperature values and the current temperature within the hibernation enclosure. The control unit is programmable, having a control panel to allow a user to program the hibernation length, and to program temperature values that may vary throughout the duration of the hibernation period in accordance with the needs of the particular caged reptile. The hibernation enclosure further comprises a humidifier to maintain optimal humidity for the hibernating reptile and a motion sensor located within the walls of the cabinet to detect movement by the caged animal in order to alert a caretaker that the hibernating reptile is withdrawing prematurely from the hibernation.