 Production began on August 9, 1971.First-time director Robert Young was unfamiliar with Hammer's tight production schedules, and at one point used up some 500 feet of film stock while trying to get a tiger to sink its teeth into a fake human arm stuffed with pork (it finally bit after beef was substituted).When filming stretched from the scheduled six weeks into seven, the production was shut down and the footage given to editor Peter Musgrave with instructions to make a finished film out of what he had.