Be kind and give the chocolate to Lucario to start the animation! ;)
(To replay, press 'c' on the keyboard after the animation has finished)

Lucario has two things that intrigue me: how he's introduced to chocolate, and his 'relationship' with Riolu. Therefore I put these two elements in one animation.
Since I haven't made an animation with an actual 'scene' for quite a long time, please forgive me for the rugged animation and the mistakes in shading here. ^^;