cats

And as I replied to another, I learned that today based on the wording of their reply.

So that's a new thing I know now. I still don't think "they" is binary though. It's is kinda the star example of non-binary.

But I guess I did exclude a pronoun that I didn't know existed. I thought the word was specifically calling the cat an object, so now I know better. It wasn't intentional, and definitely not meant that way (as in not meant to force or exclude, aka discriminate).