Apparently in the late 1960s, an American cinema chain
promised a double feature with a Frankenstein movie attached, but they couldn't
find one, and the best they could do was to find some silly werewolf movie from
Spain, so they renamed it: "Frankenstein's Bloody Terror", even
though it had no Frankensteins in it; and to justify this title change, they
inserted the attached animated intro to explain it, even though it's just a
werewolf movie (It's only 30 seconds long; imagine the chutzpah it would have taken to try to get away with this, which apparently they did):
