Draco Malfoy is a Werewolf

There are a lot of Harry Potter theories that have existed in the series' fandom, such as Snape being a vampire or Sirius and Remus being secret lovers. Many of these theories have been contradicted by the books themselves, and others seem to have little evidence supporting them in canon.

One such theory, however, bears notice. Draco Malfoy is an annoying antagonist throughout all seven Harry Potter books, but noticeably less so in the sixth and seventh. Presumably, he stops his sophomoric pranks as a consequence of his highly stressful year-long assignment to play a key role in the assassination of Albus Dumbledore.

However, there may be an even more powerful reason for the trajectory of Draco's character development in these latter books. This is that between the fifth and sixth books, directly after Lucius Malfoy has failed to retrieve the prophecy, Voldemort allows Fenrir Greyback to bite his son, Draco.

We've gone back through the 6th and 7th books, and compiled some of the most convincing evidence below:

Disclaimer

We have no ownership of Harry Potter or any related content, but we do feel pretty strongly about this theory. Hopefully it will be borne out in time!

--Brittany & Nick