Abstract: An automatic animal processing device for automatically processing a domestic animal from its stall the animal while restraining the animal and without impeding passage in the aisle. The animal processing device, while operating, allows a person to walk-by the system with minimal constraints. The animal processing device may be a milking machine may be a milking machine having a milking head assembly and a cleaning system. The animal processing device may be mounted on a movable platform, such that the processing device may be automatically moved from one stall to the next. For installations in which the processing device is installed on tracks in the middle of two rows of animals, the processing device may be rotatable on its movable platform, such that it may process the animals of both sides of the aisle.