The time depends on how complicated and detailed the animation is. Sometimes I work all day on one animation (sometimes several days but that’s rare for small animations like you see on my blog), but if the characters are simple than I can finish it in a couple hours.

And yes, I redraw each frame because I don’t like the way it looks if I don’t. It looks weird and stiff, but that’s probably because I fail at it. However redrawing each frame is very tiring, so the further I get in the animation, the crappier the frames look, haha.