I just occurred to me that, in all fiction that I can think of, dragons don't move like other lizards. I want to clarify that I'm talking about more traditional 4-legged dragons and not 2-legged ones (or wyverns), which you do see walking more like a bat which makes sense (Smaug, The Hobbit films).
Besides the obvious characterisation in some settings (How to train your dragon, for example), I don't recall ever seeing or reading about a dragon that moves like lizard (monitor lizard for example).
Have dragons always been like this? Was there a turning point where dragons starting being represented more upright with their legs underneath them (as opposed to the coming-out-the-side legs other lizard have)?
P.S. I looked through the list of SEs and thought that this was the right exchange for this question; Feel free to point me elsewhere.