Earlier quoted context omitted.
Does it move? I tried clicking on it and nothing seemed to happen.
Use the up/down/left/right arrow keys. It's not very fancy. (Mobile not supported either.)
I was amused when it dropped from the top and I played around resizing the window to make it fall. Casually dropping "use arrow keys to move cat!" under hobby programming was a lovely way of revealing that and rewarding the reader.