It was my dream to make a animation with this GDM pic, and now, after the troodon night animation, I have enough practice to make a try.
What you see here (not everything is obvious):
the tail tip twitch and the Aucasaurus blinks.
A Dendrorhynchoides fly through the pic.
A Buitreraptor run behind the Aucasaurus
Here the original: [link]