Just because a movie says animation does not necessarily mean that it's child's play. 9-12 year olds should do fine. Some parents may not find this movie appropriate for their 4-6 year olds. Next film following Antz will be Shrek . Z is pure Woody starting with the couch.
Characterizations are true and the storyline follows the thread.
Your must learn to think for yourself. Animation is great from the details of Z's facial features to the individual actions of 5 million dancing ants while the camera's position sweeps the scene. Voices are wonderful as they meld well with the characters and animation. Sharon Stone as Princess Bala brings just the right inflections and moods. Sylvester Stallone does a convincing job as the voice of Weaver.