"March of the Pigs" is the seventh official Nine Inch Nails release and a single for the album ''[[The Downward Spiral]]''. It contains "[[March Of The Pigs (song)|March Of The Pigs]]," a remix of this song, two remixes of "Reptile," and an instrumental. A two-disc version was released in the UK, which added a radio edit of "March of the Pigs" and "Big Man With a Gun" from ''The Downward Spiral''.
The disc art for this single features a rolled-up millipede, an image that was later used on the cover of the single "[[Closer to God]]".