Michael [Fassbender] is a very accomplished horse rider. I think one of the funnier things that happened here, though, was that every time he got on this horse, the horse would get an erection. And this happened actually, um, when we were doing rehearsals, and we thought it might have been Mia or the both of them together, you know, the chemistry, but actually it turned out it was just Michael. And so a horse’s erection is such that you can’t just put that on camera. We just had to bring in a cooler to walk the poor horse around, to chill it out, to come back again to shoot the scene. And it happened about three times in a row. So obviously, Michael’s, uh, power - sexual prowess - extends to the Animal Kingdom as well.
—Cary Joji Fukunaga, describing the scene in which Rochester and Jane first meet, during the director’s commentary for Jane Eyre (2011).