User blog comment:Tothemoonandback/Question about vampires feeling pain?/@comment-25010714-20140602134327/@comment-7600752-20140605045103

You are sort of right and sort of wrong. A shapeshifter wolf has no type of venom. However the Children of the Moon Werewolves DO definitely have a poisonous venom.

Anyway, what you described above is how Seth killed Riley. So...it is possible. We have to remember that both Riley and Seth were both young...neither had been vampire or shapeshifter for very long. But Seth was the victor because he retained the memories of his shapeshifter ancestors on how to kill vampires. Riley was really an inexperienced fighter, who relied on his brute strength for success. Riley wasn't a skilled fighter...Edward knew this...and also knew he could easily kill Riley. Anyway, Victoria really didn't want Riley to live...she was counting on the Cullen side to do away with him. Anyway, during the fight, Edward took on the skilled fighter who was Victoria...while Seth took on the young inexperienced fighter.