I hypothesize that parasites affecting the human nervous system (…) Toxoplasmosis

Yeah yeah, I read that same article fifteen years ago. I don’t buy it.

For one, there are many other symptoms besides behavioural changes, so we’d have way more known cases of infections. For another, those parasites aren’t transmissible over the internet and thus do not explain the whole of human fascination with cats.

It’s a much more plausible explanation that cats are interesting and reliable companions, with distinct personalities and preferences.