Do the Вампиры have fangs when they bite или they just dont have them at all?

They don't have them at all. Stephenie explains about their fangs link.

"My Вампиры do not have fangs. Their teeth are so sharp and strong that fangs are hardly necessary (they could bite through steel, if so inclined–a human neck is like butter, ha ha). The non-vegetarian Вампиры don’t leave living victims (unless they are changing someone into a vampire); this isn’t the neat-and-tidy, two-small-holes-in-the-neck kind of vampire attack that Ты see in other vampire mythologies."

stephanie meyer's Вампиры don't have fangs and are nothing like Вампиры we used to, so everything Ты know about them (vampires from Назад Книги and movies), all the myths,it doesn't involve stephanie's vampires.. so they don't have fangs but do have very sharp teeth with venom in it.. that's why edward doesn't french Kiss bella, because she could easily cut herself..

twilight Вампиры dont have fangs because their teeth are already sharp enough thats why when they bite someone, it makes a cresent mark, not two little holes

Вампиры are REALLY different in stephenie Meyers books, we wouldn't expect any Вампиры to be vegetarians would we, we thought Вампиры would be all gothic, biting humans, having fangs ect. But in stephenies Книги everything is different, thay can be vegetarians, they are not all Готика and THEY DONT HAVE FANGS AT ALL!!. xx Also instead of making 2 little holes like a vampire with fangs would, it makes a creasent mark.

Idek

yes but not in Twilight

No, those 'Vampires' don't have fangs.
Coming to think of this, having read some of the Книги and seen all of the Фильмы due to being a movie/book reviewer for a local paper... I can, as a mythology Фан as well as a die-hard horror story/movie fan, say I don't even see them as vampires.
Calling these creations Вампиры is like saying a white dog with black spots is a cow или a panda-bear: They share similarities, yes, but they aren't what Ты call them. I prefer to see them as disco-globe mosquitos.

Вампиры do not exist so the Вопрос is invalid.