Systems and methods for cleaning animals are disclosed. In one embodiment, an apparatus for cleaning a plurality of carcasses of harvested animals includes a track system configured to convey the carcasses through a plurality of carcass disassembly stations. The apparatus also includes a spray system for directing a fluid at a portion of at least one of the carcasses. The spray includes a plurality of nozzles configured to rotate relative to the track system. The spray system directs the fluid onto each of the carcasses in a tracking manner as the carcass moves from a first carcass location to a second carcass location. In another embodiment, a method for cleaning a plurality of carcasses of harvested animals includes providing an assembly line for conveying the carcasses through a plurality of carcass processing stations. At least one of the stations comprises a spray nozzle assembly for directing a fluid in a rotating path at a portion of each of the carcasses. The method also includes directing the fluid onto each of the carcasses in a tracking manner as the carcass moves from a first location to a second location on the assembly line.