The game overall was pretty fun, but I agree with the previous comments the mouse could be a bit bigger (or at the very least the mouses hitbox).
My favourite part was definatelly the curtscene at the beginning. It's something most devs don't take time to do and it was a very welcome addition!
(second favourite was the animated tail xD)
The mouse did get stuck for me in the gravitacion zone of the second or third? level and it didn't get to the next stage for quite a bit. Not sure what triggered it finally moving.
Still, good job!