kitty alert (~/+), gender identity
Arthur... er... most likely has a XX chromosome pair!
We had been trying to, er, keep our noses our of the kittens' primary sexual characteristics, but they're all kinda prone to waving them in front of us whether we like it or not, so we've got 2/4 of them pegged now. :p (Penumbra has "boy" bits.)
We are of course NOT changing their name, and until I receive further information directly from Arthur I am assuming their pronoun preference is still "hey, kitten!"
=^______^=