 There are two versions; the more common one is known as the "American"  version, released by United Artists.  The second it the "Canadian" version,  seen on Canadian television often (usually CityTV or CBC).  The Canadian  version starts with A Dratsco Production and narration starts with another  time, another place instead of The War was over... The only survivors were  street animals: dogs, cats and rats. From them, a new race of mutants  evolved. That was a long time ago.