Dil was originally going to be voiced by Madonna. But when Tara Strong recorded her scratch voice for the character, her impression of a baby crying was so accurate that it caused a woman in the room, who had just had a baby, to start lactating.
In theaters, the CatDog (1998) short "Fetch!" was featured before the movie, though the CatDog short "Winslow's Documentary" (aka "Winslow's Home Videos") was featured as a bonus feature on the original VHS and DVD releases.
Marked the first use of the infamous Klasky Csupo robot logo (the graffiti logo had been used more for Rugrats before then and, up until a certain point in the series, was still used) by Rugrats media and in the theatrical releases of Nick's movies.
Paul Germain (who, at the time, had already left Nickelodeon to work for Disney, but served as the film's executive consultant) has mixed feelings for the film. While Germain doesn't exactly hate or disown the movie, he has a few problems he has with it: thinking that some moments, such as Stu giving the watch to Tommy didn't work, as the babies and adults weren't supposed to communicate, and that he was upset that now Dil was introduced at the beginning, as Tommy is supposed to be the youngest.
Theatrical animated movie debut for actor David Spade. He would later go on to play Kuzco in The Emperor's New Groove franchise, Scuzz the horsefly in Racing Stripes (2005), and Griffin the Invisible Man in the Hotel Transylvania franchise.
The trivia items below may give away important plot points.
The first and only Nickelodeon movie (up until 2008) in which the main antagonist (the Wolf) dies in the end. Other Nickelodeon movies have had secondary antagonists die though and others have had characters who aren't antagonists die. More prominently, most of the others have had primary antagonists be arrested or suffer some kind of humiliating defeat instead.