Among all the kinds of serpents there is none comparable to the dragon, or that affordeth and yeeldeth so much plentiful matter in history for the ample discovery of the natural thereof. the student will do very well to heed these words of natural philosopher and dragonologist Edward Topsell, in his 1607 book, The History of Four-footed Beasts. For while there is little in dragon legend that is perfectly true, there is also little that is entirely false, and the student should seek information from any other available source, with an entirely open mind.
The History of Four-footed Beasts picture.