Elephants do not fear mice, nor much of anything else for that matter.
In spite of how often the term is used, there is no official definition of "middle class" in the United States.
Dinosaurs were not the largest of mobile animals. The blue whale was and still is the biggest.
There is no psychological harm in waking a sleepwalker.
One cannot introduce a "new" witness in court and get a Perry Mason ending. It simply isn't allowed. Most states have both sides access to the same information and witnesses. Surprise evidence and witnesses cause a mistrial. Sorry, Hollywood.