My sweet little biter

It's only Tuesday and I've already gotten 2 calls from the Preschool Director of Krennan's school. On Monday, he bit someone because he "wanted to be a werewolf". On Tuesday, he bit another child supposedly because the little boy asked him to. Not sure if that's actually true, but that's the story that made it home. Then we went out to eat with Mom and this is what I see. How can this sweet little face be a BITER???? Hopefully, he'll grow out of this phase soon!