A team at Spain’s University of Alcalá examined small tooth marks on the H. habilis fossils originally recovered from the Olduvai Gorge in Tanzania. They then tasked their program with analyzing photos of the H. habilis mandibles to see if the wounds corresponded to any of the dataset’s predators. “This suggests that H. habilis was unable to fend off top predators from their kills,” argued the authors. There is still evidence linking H. habilis to some of the first uses of stone tools such as animal butchery. But if more gnawed H. habilis are ever discovered, it would only further indicate that the hominins weren’t quite the conquerors of their domain just yet.