Thanks for reminding me, I didn't notice your comment for a while.
Anyway, my favorite dragons would have to be Toothless and some of the other dragons from
How To Train Your Dragon and the sequel and spinoffs. The depth in depicting the dragons as actual animals and not just some antagonistic fantasy creature was splendid.
Other fictional dragons I like are just about any dragons appearing in any work of fantasy, such
as the dragons in Harry Potter.