Glad you like my little cat. I got a whole army of them. In fact, they tended to invade my notebooks from time to time (specially during exam times).
Now, a big one:
I'm quite proud of this one, as at first it seemed very difficult to achieve the motion sensation with only a normal pencil. The original is from Glen Orbik, by the way, and I took it from a book called TSR's worlds or something similar.