By "documentary" I meant that they are naturalistic and demonstrate the real life of nature. Am I right?

as for 'Minuscule' -- no, I would say they are realistic (they are created that way), but no, they dont illustrate the real life... it is fictional stories told 'from the human point of view' -- in such way the basic idea is understandable even to little kidz. just watch a few series... when you have leizure time - you will see yourself ☘️