As Maximus is captured, the sky changes between night and dawn.
The lips are off sync at several points in the movie.
Although Ebony the zebra is established as a male, when first met, Uncle Lope calls him a "Her" and "She". However, later on in the movie, the zebra is addressed as a "Him" and "He".
When the magic chameleon heals uncle ope from dying, uncle ope's teeth pop pot.
So he proceeds to pick up his teeth with his teeth.
(They never actually bothered to change the entire uncle ope model to show without teeth)