In the first theatrical trailer, Roddy was not the only pet of the little human girl. There was also a cage with two small yellow gerbils, who seemed to be Roddy's menservants. However, in the final cut of the film, these two characters were removed, probably to advance the story, and make Roddy appear to be a character who is more "alone" than "spoiled". The first trailer also shows the discovery of Sid during the day instead of late at night.
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