when werewolves die
When werewolves die, if they were in werewolf form, they will revert back to human form upon death. This is part of what makes it so difficult for humans to prove the existence of werewolves. Scientifically, this means that werewolves have no ontological inertia. Ontological Inertia basically is a concept in metaphysics that means that once something exists – it will continue existing. In other words, it won’t just disappear once you turn around. Werewolves obviously, are one of the rare exceptions to this, because once they die, they DO disappear – they revert back to human form.
What this means is that humans may be in doubt for a very long time as to the true existence of werewolves. Because werewolves are very adept at staying hidden while alive, it is almost impossible for a human to catch a werewolf in transformed form unless they want the human to see them. In those very rare cases where werewolves are caught (and this is typically by experienced werewolf hunters not scientists) it is typically with the intention of destroying the werewolf – which has the end result (much to the dismay of scientists) of turning them back to human. Again, destroying all evidence that they were werewolves to begin with.