Just use the arrow keys. That's all it should take to make the cat walk around the screen. :)
NOTE: I have new sprites now. Credit for the use of these sprites is no longer required. However, you still cannot claim them as your own work. Oh, jeez. I used to be so bad at pixel art. >u< Just look at it! Inaccurate anatomy. Poor shading. Really flat looking. Awkward animation. Blah. This is the first step of my probably insane idea of creating a Warriors RPG, which I've had for the past several months. This is just to test the base cat sprites I spent quite a bit of time making. The animation used to be smoother, but unfortunately the program wouldn't run correctly with all of those sprites, and I had to omit most of them. Sorry that it looks a little bumpy. I may work to improve on that later. These are my first original sprites. :P This is no cat in particular, but tomorrow I will start work on sprites for the playable characters. My plans for this RPG is to have it set either during the Omen of the Stars series, or shortly after. I will post the advantages and disadvantages of both in the next project, and ask you guys which you think will be the better path to take.