15. There’s a clever reference to King’s other work in the film
If there’s one thing Stephen King loves doing, it’s dropping in little links to his other works in his writing. And some of the people who adapt his work for the big screen seem to be similarly inclined. In Shawshank, for instance, Red’s cell number is 237. It’s a double-headed reference to both the haunted Room 237 in The Shining and the amount of change that the boys put together in Stand By Me – $2.37.
14. The American Humane Association was very particular about the animals in the film
As it’s set in a prison, there understandably aren’t many animals in The Shawshank Redemption, save for Brooks’ crow. Nevertheless, the American Humane Association (AHA) visited the movie’s set to make sure that the animals involved were being taken care of. And it turned out that the crow wasn’t a problem – the maggots that it was eating, however, were. They’d been bought from a tackle shop, but the AHA insisted instead that they had to have died of natural causes to be used in the film.