If you offer them some sugarcane, even elephants can do this, sometimes on the first try.
Don't teach too many postures; just the main ones, and hold them for a long time.
Always remember that Nature refuses to be rushed. She can only be made to evolve and that takes time, so take heart.
You have to get serious about your practice!
You have to find your own tricks!
This is the only advanced pose (Firefly Pose) I know that you can run away from the police in.