Malaria...

The screwfly...

Parasitoids like wasps...

Quasistable intermittent ecosystems resulting in frequent binges by predators resulting in massive die-offs of prey species and then famine resulting in massive die-offs of the predator species.

These are parts of nature. No heros. No soldiers. Just mass suffering without purpose. In fact, we flockers and banders who will help a fellow out, right a turtle or rescue a cub are new to the game.