No, it's not a pine marten
Pottermore rolled out its latest magical feat. Fans of Harry Potter’s wizarding world can now take a quiz to find out their own Patronus animal. When casting the Patronus charm in order to ward off soul-sucking Dementors, a happy thought takes form of an animal or creature that represents the spellcaster and will defend the caster against the Dementor.
J.K. Rowling created the Patronus test, as the author puts it “ages ago,” and originally got a pine marten (a relative of the otter, mink, and beaver, in case you were wondering), she revealed on Twitter. “My fondness for weaselly creatures is well documented,” she joked. But the best selling author retook the quiz as it was finalized last week and was given a new Patronus.
“It had changed (which, as we know, can happen),” Rowling said and she is thrilled with her latest incarnation, a heron, due to its “personal associations.”
See all her Tweets below and take the Patronus test over at Pottermore.