Abstract: A device for putting a jacket on a mammal, comprising: a tube extending along an axis between an inlet and an outlet; the tube comprising: a hollow conical part tapering from the inlet and a hollow cylindrical part contiguous to the conical part and leading to the outlet, the cylindrical part having an outer surface adapted to receive the jacket, the tube presenting a slit running longitudinally through the tube; and a base comprising a flat support surface parallel to the axis of the tube, the tube being configured to allow passage of the mammal through the tube from the inlet to the outlet so that the mammal engages the jacket when exiting from the tube.