Dragon Walk animation request

[Tyrannosaurus rex]

Hey everyone,
                        I have been so far going good in working on old sega genesis characters, but it seems I'm having difficulty with one case.



Its this dragon. I tried giving him a four to five frame walking animation but his legs are shaded in a way that I'm not able to replicate. I would really appreciate it if someone can provide me a few frames of walking for him (at least two or three so that I can try finishing off the rest of the ones based on the shading). 

Thank you very much