A treatment device for an animal is provided. The device comprises a treatment member (1), having a first end and a second end, a longitudinal rotary axis (X) extending through the treatment member and the first and second ends. Driving means is connected to the treatment member and brings about a rotational movement of the treatment member around the longitudinal rotary axis. A carrying member (2) carries the treatment member and the driving means, and an anchorage member (4) anchors the carrying member to a stationary element. The carrying member comprises a first pivotal connection (3), permitting the treatment member to swing about a first axis (Y) and is further connected to the anchorage member via a second pivotal connection (5), permitting the treatment member to swing about a second axis (Z). The second pivotal connection is provided laterally closer to the anchorage member than to the first pivotal connection.
