Cat Claws

Yesterday was a bit odd.  While I was petting my adorable cat, Sweetheart, she FREAKED OUT.  For a minute there everything was fine, then I moved my hand over half an inch to the right to scratch in the spot between her left shoulder blade and ear when it happened.   Her whole body twisted, claws digging viciously into my arm, while slamming into the ground and her back leg twitching like a dogs.  I had to then carefully extract each claw.  Apparently, she had had an itch there for a while.  Still, I don't think that situation is what anyone would call "normal" but, whatever.