The film probably just barely squeaked into its PG rating rather than going into PG-13 territory, thanks to Woody Allen's secret re-write, as well as the rating system being less strict in the 90s (at least for animated films).
- "It's your nature, but in spite of your limitations, you are going to finish this tunnel on schedule, come hell or high water."
- "Call me crazy, but, I have a thing about drinking from the anus of another creature." In the trailer, "anus" was changed to "caboose".
- "Yeah? And ever since we were little, I have been listening to you complain. What are you bitching about?"
- The ants go to war against acid-spewing termites, and both are massacred, with only Z surviving. We're shown this battle, with ants melting in acid, and in the aftermath, Z even holds the severed head of Barbatus (a named character that the audience likely got attached to already) who dies not soon after a last talk with Z.
- When Mandible learns that one soldier survived his deliberate suicide mission: "Damn!... Good! Damn good!"
- And then there is the scene where a boy burns the ants to death with a magnifying glass and it looks really gory.
- Then there's the line: "You know, I was going to let you become a part of my most erotic fantasies, but now you can just forget that. Write it off." The original line was "part of my most erotic sexual fantasies", but they removed that line to avoid a harsher rating.
- "Z doesn't give a damn about us!"
- "Don't tell that tight-ass anything, Weaver!"
- Also the exchange: "This stuff tastes like crap." "Lemme try some... Hey, it is crap. Not bad."
- "I'm a princess, dammit!"
