Great Scott, it had a title - The Killer Rabbit of Caerbannog. You do remember that wee fluffy bunny? In case not, the clip from Monty Python and the Holy Grail is here. And still mighty sweet after all these years, I want you to know.
The Wikipedia entry on the KRoC is a riot. Did you know an inspiration for the creature was a carving on the facade of Notre Dame in which a knight flees from a rabbit? (It's near the entrance, I'm told.) And that the woman who owned the actual rabbit "actor" was peeved at the amount of Kensington Gore they poured on Bunny? And that "Kensington Gore" is a name for stage blood? I swear I learn something new and weird every day. Wikipedia here.