There is a little known fact that Kouryuu happens to like cake...perhaps a little too much. A much lesser known fact is that the dragon physiology does not handle sugar very well, thus very a very hyper dragon may result after allowing them to consume cake.

I did use a reference for the base sketch and expression in this piece, and that reference was done by the talented fortuna, which may be viewed here:

http://www.furaffinity.net/view/6207057/