Press space for blinking, up arrow for "meow", down arrow for an ear twitch, left arrow for a tail waving, and right arrow for tail poofing. (and meow-ish thing) :3 (Press the green blob thingy before switching between left/right arrows and the other animations, or it'll lag.)
I got lazy with some of the scripting and just used the "next backdrop" and "previous backdrop" blocks. All of the art and scripting belongs to me. The meow audio is "meow2" in the Scratch Library. This was fun yet time consuming for me to do.