Daenerys Targaryen and Drogon, as Khal Jhaqo founds them. From George R.R. Martin's novel saga 'A Song of Ice and Fire'.
A quick draw I made last year, just after finish 'A Dance with Dragons' read. I thought it's a very powerful scene. Seein' it now... I don't like so much, so I think I'll do this scene again in the future.
PD: Of course, it's a 4-leg dragon.