Well, so much for the food chain and it's checks and balances in the animal kingdom!
the only reason we even care about wild animals is because they are somewhat aesthetically pleasing and are a limited resource. as soon as we need the space we'll keep doing what we've always done and take the land they're too pathetic to fight for and use it for our own. humans are the paragon of life on earth and if the animals weren't so stupid they'd do the polite thing and kill themselves so we wouldnt have to expend the energy
then you have useless 'endangered' animals that are too pathetic to survive even when nobody is actively killing them. i say maybe freeze some of their DNA in case we want to clone them for like zoos or something later and leave them to their own devices. i dont see why a god-like species like ours is stuck babysitting failures.