Earlier quoted context omitted.
That's what I though, at least while reading the "type 'cat'" one.
I thought about it for a while, and then it occurred to me, that there are actually many ways one could possibly understand that -- thus replying e.g.: - cat - "cat" - 'cat' - panther (not exactly a cat, but kinda -- that's why it was in quotes, no?) - [one could type "cat" in one's terminal] - "Whiskers", etc. (i.e. name of one's cat) then, one could make a typo (thus e.g. "ca" or "catt"), or finally something more…
Turns out something in Google Forms uses UCS-2 internally, so it rejected my whole survey.
EDIT: I guess Arc isn't very good at this either.