Short — below 10K words? :D

Though, I do not like the look of JK's werewolves. The skin doesn't work for me BUT it is still all good.

I do believe that Hermione tells us in book three that werewolves in HP world differ only slightly from real wolfs. Something about snouts? The skin thing was in the movies only, that was just Cuaron, bless him, being weird as usual. :D