Do vampire bats have fangs

well if u seen twilight or the new my baby sitter's a vampire series on Disney channel they all have fangs

No!

Fangs were a feature unique to Count Dracula. As he was a high level sorcerer and capable of modifying his reality and form, growing fangs were no great feat. Since him all movie vampires have had fangs.

The truth is that a vampire is very much the person he was when he died and what ever teeth he had when he died is what teeth he will have when he is a vampire. Most vampires go about getting blood by using knives or sharp prods.