Nice, though in the flying animation it seems a little like the dragon is just kinda waving its wings rather than flying. For that, I'd recommend having the front of the wings lead the vertical motion, kind of like a bit of a scoop for air. On the run and walk cycles, I'd also like to recommend having the grounded foot move back at a constant pace to imply a smoother push against the ground or floor. But enough with technical stuff, because it's pretty good overall and I like it. I almost immediately zoomed in on the butt when I brought up the model :P

Yeah I guess the flying animation looks more like gliding or maybe somewhere in between. I'll try to pay more attention to the technical stuff when I try these animations with a quadruped dragon definitely as well as fix like the small stuff like the glitchy tongue. I'm glad you like it though!