There's a Facebook profile for probably just about every human alive, but that doesn't mean just about every human alive is on Facebook. Some shadow profiles get more intensive curation than others, is all.

Those are people pretending to be cats and dogs.

Cats all hang out on the dark web using things like TOR and tails OS, which is a portable operating system that protects against surveillance and censorship. [1]

[1] https://tails.boum.org/