The invention relates to a device for stimulating an udder during milking, made up of a housing with a first connection (350, 351) and a second connection (352, 353), which housing can be grasped by a hand. The first connection connects the housing to a pulsator and the second connection connects the housing to a teat cup. A throttle valve (305, 306) is interposed between the first connection and the second connection. A control device (309) is housed in the housing and is adapted to bring the throttle valve, after a defined duration, from a partially open to an open position.