Was researching some stuff on the existence of Dragons and found this conversation.
Go here to read it from the source, but fair warning, it is in some sort of slide show format.
I think that the only “proof” that we have that they don’t exist is that we don’t have any evidence of them… no fossils, no living examples. That’s the best reason that I can give. Other things seem implausible. Some dragons are said to breathe fire. If that were literally true, wouldn’t they burn themselves, especially the inside of their mouths? But I have read interesting Science Fiction explanations of how a creature like that could exist, so… who knows? I have also met people who believe that they do exist, and I’m sure that there are other people out there. I don’t believe that they exist, at least the way they are portrayed in many stories… gigantic, intelligent beasts who breathe fire, or other things like ice, acid, etc., who terrorize the countryside, but who are also literate and wise. I’m also not sure where so much literature came from… is it all based on some original fabrication that caught the imagination of multitudes of people from many different countries, or was there something that actually existed that people base the dragon myth on? Are there giant sea serpents? We have no evidence, but is lack of evidence always proof that something does not exist? On the other hand, the Komodo dragon exists as an actual creature… so what is your definition of dragon? If it is just big lizard, they do exist.
There have been thousands of species of animals we didn’t know about for so long and who can’t say that dragons haven’t been discovered yet? Some people may have discovered them, like Dr. Ernest Drake (a dragonologist), they may have found them and told someone but they didn’t believe them because the fact that there are huge flying lizards around is hard to believe.