Jamie Donnelly Jodie Foster, Laura Dern, Sigourney Weaver, Geena Davis, Jamie Lee Curtis, Sarah Jessica Parker and Madonna were considered for the role of Abby Mallard before Joan Cusack was cast.
The technical team built a digital tool called "Chicken Wire", which is a geometric wire-frame model of the characters that the animators could squash, stretch, and smear. They wanted to get a 2D animation style in 3D animation.
When Chicken Little is called into the baseball game, the cat character sitting next to his father, Buck Cluck, is identified in the subtitles as a Cheetah and yet has no spots. Later on in the movie, he does appear with spots.