Well, a successful first timer!
Well you were more successful with your first time than I ever was, mine got blammed within seconds, but i admit, it was just awful. But now I am just an amazing animator :) . Now that, was pretty funny! The whole slow pace of it in my opinion gave it more of that kind of 'whats going to happen next?' atmosphere, like when is the cat gunna snap? We just don't know... its like birds..what are birds? We just don't know. Yeh maybe for your next time sort out the frame rate, and maybe add a bit of shading here and there (unless you want to keep your graphics the same intentionally for its simple effect) And if you are planning on making it a series, I'd definately watch it. Well done, and good job :D