What kills a hyenas?

adult hyenas are killed by lions in rare circumstances over food disputes. humans probably kill more hyenas than any other predator. they are mostly scavengers but when they do hunt they can suffer from injuries resulting in death by being kicked in the head or mouth which prevents them from eating. automobiles, over population, drought, rabies and starvation account for many of their deaths. the single best answer for what kills a hyena is loss of habitat and food due to human over population.