Thank you Frank! I used Sprite Shape component to manipulate the cat's body & neck, and control the tangent and point position with code. It's a great tool, But I don't recommend to use it in my way. The tangent of each point during run time is hard to calculate and its hard to get precise position of parts (like I couldn't get the precise position of the head). When I realize that this is not the best approach I had already gone too far with it hhhh