[quote=Windstormugly]
Yeah, I know of the problem, thought that the site didnt have it any longer.Oh, and regarding the mass, it thins out over a bigger volume, which means a lesser density directly afterwards. and the change back is the problem as it causes huge amounts of tissue to be useless, some parts would be able to logically ease back, but it would require a skeletal structure enabling it. Other tissue would basically fall of, like a felling of the old skin. messy indeed.Oh and I guess I misunderstood as I was focused on a change in appearance and not just in stance ^^
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Yeah... I would highly not do the top since it'll not only be a mess but would take a long time to recuperate from the first initial change to begin with, added with the fact that it would hurt a hell of a lot to begin with in comparison to my suggestion. Plus again the dragon would be rather stiff as well. 

Well changing the stance would also change the appearance in a sense as well. If the dragon is able to naturally walk in both stances than there wouldn't bee too much of a need to change too much of the shape to begin with and again, at maximum it'd be like "popping" your shoulder and would require the utmost minimum energy and pain for such a simple "change". 

Of course the dragon would still hold a similar appearance, it's just the stance and the way it walks would change.