Help! Not sure what's wrong with kitten.
Everything was fine today, until it started raining and a thunder fell relatively close to the house (the noise was somewhat loud, but not insanely so). Ever since then the kitten has been hiding (I couldn't get to him at first, since he hid under the sink), with his tail tucked between his legs, and even if I pick him up, he doesn't react and goes back to hiding as soon as possible when I let him go.
He's been like this for over an hour and is now hiding under our bed. It's just so strange because he was so extremely affectionate to me (as normal) just this morning.