On October 27, 1966, "It's The Great Pumpkin, Charlie Brown" premiered on CBS to millions of viewers. But, to this day, there are still a lot of things you probably don't know about the animated Halloween special, like how the success of "The Great Pumpkin" saved the future of the Peanuts franchise, or how a loose tooth almost set back the whole production.

Here are nine things you never knew about "It's the Great Pumpkin, Charlie Brown."