Hmmm. I'm not so sure what you have here is working very well. There needs to be a lot more anticipation for the fire breath. Right now he just scratches the ground and then goes into breathing fire. He'd probably be pissed off if he was going to breath some fire, so bring that out in the animation. Lower him down, get him…
i made a low poly dragon and animated him with biped, just to see if it's difficult do it... like the dragon in HARRY POTTER.. here the link: right clic and save as.. http://jeremymariez.free.fr/fichiers/dragon03-s.avi
awesome stuff, I much prefer the second one, the motion on the legs and arms just makes more sense to me, and I like the floppy wings. With the first one I don't quite understand the arm/leg movement, but maybe it will move in the air a bit differently than shown? I love it though!