Abstract: An automatic animal processing device for automatically retrieving a domestic animal partly from a stall to process the animal while restraining the animal. The animal processing device includes an animal controlling mechanism operative to engage, position and restrain the animal for processing. The animal controlling mechanism may include at least on articulated arm to constrain and immobilize an animal to process it, e.g. milk it. The animal processing device may be a milking machine may be a milking machine having a milking head assembly and a cleaning system therefor whereby the milking head assembly is cleaned inside a compartment. The animal processing device may be a dual animal milking machine having full and half operation modes whereby two sets of processing equipments are used to service two animals simultaneously or only one set is used for both respectively.