Actually, I have canonical PROOF that the dragons in the Harry Potter universe, DRAGONS CAN SPEAK THE ENGLISH LANGUAGE TO HUMANS. Probably not Full Blooded Muggles, but Definitely Anyone from the Wizarding World. However, I am holding out for the reveal at this time as I am the only one in the universe apparently who has figured this out, as I see it NOWHERE in Google AT ALL, and it is the public concensus that Dragons in opinion, CANNOT physically speak to humans. The only Hitch in my step, as I hesitate to bodily make my announcement, is that I cannot verify wether or not the proof I speak of IS in fact, verbal, and not some sort of telepathic ability. But LOGICALLY, I am assuming that it was word-spoken communication, as I also have not seen any canonical evidence that dragons can communicate with humans via the mind, and in plain English. So my assumption is as stated above, and once I've spread the word it will change everyone's opinions on a widely debated question. So please, wait with baited breath, I shouldn't be too too long in sharing my information :)