Whenever there's a werewolf, or werepanther, or were-rabbit, or were-whatever, and this has not been made clear to the characters yet, there has to be at least one scene in which one of the human characters discovering a set of animal footprints which change into human footprints (or vice versa) as the characters follow them along. A great way to set up tension. Of course, there's a small amount of Fridge Logic involved in this trope, as werewolves are rarely if ever depicted as walking during their transformation. Either they're standing in place or hunched on all fours.