Georgie Henley's reaction to Mr. Tumnus at the lamppost is genuine. She had not seen her castmate James McAvoy in his costume before filming the scene, so her screams and reactions were real. Georgie's first reaction to the snowy world of Narnia is also genuine. She was carried into the set blindfolded to make her first entrance, and her wide-eyed, delighted reactions to it all were entirely her own.
The wolves that destroyed the Beavers' home were mainly real animals, with one or two CGI ones added in, although their tails had to be digitally removed and re-added. Their tails kept wagging while filming the scene, making them appear friendly. The trained live wolves in this cinematic film were the hybrids of Huskies or Alaskan Malamutes.
When the adults' swearing got out of hand on the set, Georgie Henley (Lucy) set up a swear bucket. James McAvoy was supposedly the worst offender. Even her teenage co-stars had to pay their toll, though, especially Skandar Keynes, according to the DVD commentary.
The inscription on the blade of Peter's sword reads, "When Aslan shakes his mane, Narnia shall know spring again."
In the movie, Edmund asks if the White Witch can make him taller. In fact, Skandar Keynes grew six and a half inches during the filming of this movie.
Cassie Cook, Brandon Cook: In the scene on the train, the two children sharing a car are played by the children of actress Sophie Cook, who played Susan Pevensie in The Lion, the Witch & the Wardrobe (1988).
Jaxin Hall: When the Pevensies are at the train station, Peter (William Moseley) looks at a soldier, played by Jaxin Hall, the runner-up for the part of Peter.