When Roger bursts into the hospital room to grieve for Baby Herman, Mickey Mouse appears as a mouse skull anatomical wall chart. Mickey's pants and shoes can be seen next to the changing screen, and a bag of money sits on the weighing scale, indicating that Mickey himself once occupied the room. Later, the mouse skull chart is replaced by a chart showing a rabbit's brain, which is a peanut.
Was released theatrically with Honey, I Shrunk the Kids (1989) and the 3D Re-Release, Meet the Robinsons (2007) internationally. It was later re-released in Uruguay theatres in front of Divergent (2014).
The first of three Roger Rabbit cartoons produced for theatrical release, and the only one with a complete ending. (The others, like the opening cartoon in Who Framed Roger Rabbit (1988), were "interrupted" midway.)
Droopy's one line ("Gruesome, isn't it, folks?") was actually an outtake from Who Framed Roger Rabbit (1988). The voice is that of Richard Williams, animation director on that film.
Originally the surgeons were going to attempt to perform surgery on Roger with a kitchen knife. It was animator Jacques Muller's idea to have it be a chainsaw.