In Cap. IX of LLPSI Pars I, Ørberg tells the story of a black sheep wandering into the forest where it's confronted by a wolf. The wolf finds the sheep alone in the darkness of the forest, and the sheep closes its eyes and waits for the wolf to attack. The sentence Lupus collum ovis petit dentibus... then follows. I took this to mean the wolf makes for the neck of the sheep with its teeth, or more literally the wolf makes for the sheep's neck with teeth.
Is dentibus ablative and is the preposition implied, or is this dative and the indirect object of the sentence?