Very well done, and interesting too. It has a very whimsical and educational side to it, which pleases me, because everyone's a sucker for cute things. You gave me quite the scare, though, in the beginning. The voice appeared all so suddenly, without even a proper introduction. But, that's not quite necessary.
Good animation, and a good voice are then things I love here. In fact, I don't see anything wrong with this one. Great work! Keep this up.