The word "Fixed" in the keyword is crucial. Original leaked unrated copies of Dog World (circa 2009) had severe technical flaws:
In several European and Asian markets, the unrated cut received an 18+ certificate (or equivalent) for "strong bloody violence, sexual innuendo, and drug references." The "-18" in your search keyword likely originates from Japanese or German file-naming conventions (e.g., "Dog_World_2008_UNRATED_JPN_-18_fixed.mkv"). Download Fixed -18 - Dog World -2008- UNRATED English