Lupus Pupus

Whatever you do, don't eat this bait yourself. Just set it down in the vicinity of an oil-soaked wolf. If they're desperate enough to eat the microfilm, they'll come running when they smell the bait. Simply wait for nature to take its course and then all you need to do is search the, uh... byproduct for the film. I'd offer you my special lupus pupus scupus for the job, but I left it back at the airstrip. I'm afraid you'll have to conduct the... err... search the old-fashioned way.