User blog comment:MonstrousNightmareFan/Hopes about what will happen in the coming episodes/@comment-3230751-20130218175940

Now not to disagree with you all for the sake of disagreeing, but I would personally prefer that they leave Toothless as the only Night Fury. He is supposed to be the rarest dragon, so if you add more it will be akward. Besides that his uniqueness makes his relationship with Hiccup very special. If you throw in tons of Night Furies Toothless will just seem like any other dragon. I think the directors intend to leave him as the only one, and I think that is best. Toothless would be a lot less special if he was not the only Night Fury.