Easter egg: Go to the end of the special features menu and press down on the "main menu" tab and the zebras ears will change colour. Press enter to see a short with the rooster.
Racing Stripes (2005)
1 easter egg
Directed by: Frederik Du Chau
Starring: Bruce Greenwood, David Spade, Hayden Panettiere, Frankie Muniz, Snoop Dogg, Caspar Poyck, Gary Bullock
Revealing mistake: In the scene where Stripes is looking in the water at his reflection, his body and the reflection don't quite match up. You can tell by his movements that his reflection is computer generated. (This is verified by the audio commentary.)
Scuzz: Try starting out life as a maggot. Nobody wants to pet a little maggot.