That looks nice, especially the tail. I had trouble making it stand out. Though I still think the darkest colour is a bit too dark, guess I should've tried to add a colour inbetween. Thanks!

I played with it slightly and darkened a few outlines/shadows and lightened a few highlights on one frame. The colors are unchanged, just the placement of them altered slightly- link

I agree the contrast is a little low. But the mouse is supposed to be almost white and I couldn't get it to not look brown while using darker colours :/

I think every bit of it looks very good, except it could stand to be a lot darker in some parts. Right now there's barely any difference in the lightness of the colors.