Liam Aiken was given his own Italian greyhound puppy (which he called Kes) as a reward for working on the film. It was meant to be presented on his final day of shooting, but the gift was held back until the end of the day because his saddest scene was due to be filmed then and the crew did not want him to be happy.
Liam Aiken was permitted to operate the camera and shoot a single take for the film, but it was ultimately cut.
This film features three farts, all produced by the dog voiced by Carl Reiner. For fans of flatulence: 33:25, 45:02, 1:0004. Enjoy!
The hat Owen (Liam Aiken) wears bears a badge reading "GB03", alluding to the film's title and its year of release (2003).
This film represents the second voice acting role for Matthew Broderick, having earlier voiced Simba in The Lion King franchise.
The name 'Hubble' honours Edwin Hubble, one of the most influential astronomers of all time, and is the namesake of the Hubble Space Telescope. Owen's fondness for space is shown by his cap, which features a galaxy motif.
Matthew Broderick and Cheech Marin featured in the 1994 film The Lion King.
