Quick test of your perception of reality

Hey, you know how you know things? Well a lot of what you know, you learned from wathching TV and movies.  Here's a great example.
Think of an eagle, soaring high in the sky.  Then think of the noise the eagle makes.  listen carefully to that sound in your mind.  It sounds like this:

That's a red-tailed hawk.  Eagles actually sound pretty different:

Somebody decided that eagles don't sound how they look, so they changed the sound you always hear accompanying eagles on TV.  Did you know that?  If you didn't, what else might you not know?