Board Thread:Dark Souls/@comment-24210164-20131206034348

So im not sure if this has been asked/answered, but whats up with the drakes and wyverns in the game. As I understood it, Gwyn and his merry band of followers wiped them all out and yet there clearly are some left. I am not sure if a wyvern can be considered a "dragon" but I thought since it drops dragon scales then it is at least somewhat related to them. Thoughts? 