then in that image with the sleeping dragon, why'd you draw external testicles and an starfish...? dragons are reptiles
Dragons are not reptiles.
Reptiles are cold blooded. If a dragon was cold blooded, breathing fire for more than a fraction of a second would cause it to have a heat stroke and die because its body temperature would get too high and it doesn't have the ability to manage it.
Dragons have traits of both reptiles and mammals, and because of this it's more likely that they're a "missing link" between mammals and reptiles, an in-between stage of evolution, if you will.