Predators have roamed the planet for 500 million years. But one or two hundred thousand years ago, the world’s most powerful predator arrived.
We lacked big teeth or sharp claws, huge tentacles or venomous bites. But we had "intelligence", and the guile to produce tools and artificial weapons. And as we became ever better hunters we wiped out the passenger pigeon, the dodo, the great herds of North American bison. Last century we decimated great whale populations.