I really like it, in the preview, I cant see what is the action the boss do, but in the complete piece, it understand really good, and is very fluid!

One thing that bugged me was the way its crest -particular the lower edge- would change shape (unless that was deliberate), the bottom part of it being straight with banding then more pleasantly curved.

In two or so of the frames, I can see the (viewer's) left ear, which makes me feel I should see at least some of it through the rest of the animation.