Back at it again (at Dreamy Team)

[Omega]

And a question, because this has stumped me for a while. Any ideas how I should animate this guy's tail here?

how about a it starts as a normal S curved tail and when it's opening the mouth the S turns into a backwards Z?

edit: actually looking at the tail again, I think it would be better if it falls to the ground with every mouth opening, and comes back up in between.