That Miley Cyrus was not the first choice for Penny. Chloe Moretz voiced the entire film before Miley was placed on the project.

The design of Rhino in his plastic ball was based on John Lasseter's pet chinchilla, which was brought to an animators' retreat during the film's production.

The number on Bolt's dog tag is the address of Disney's feature animation building.


In the French version of the movie, Bolt is called Volt.

First film to be released on Blu-Ray before DVD.


Originally, Mittens was to be called Mister Mittens as her masters never took the time to check if she was male or female.