User blog comment:Tothemoonandback/Question about vampires feeling pain?/@comment-4054797-20140520220306/@comment-7600752-20140522045649

The sole reason for the shapeshifter's existence is to protect humans from vampires. They do this by killing vampires. So yes, shapeshifters can cause damage to a vampire. It usually takes two shapeshifters to kill one vampire. But we know the shapeshifters can kill vampires because the pack killed Laurent in NEW MOON. Later, in ECLIPSE, the pack kills part of the Seattle Newborns.