The debate about whether "Tyrannosaurus" was a predator or a pure scavenger is as old as the debate about its locomotion. Lambe (1917) described a good skeleton of "Tyrannosaurus"s close relative "Gorgosaurus" and concluded that it and therefore also "Tyrannosaurus" was a pure scavenger, because the "Gorgosaurus"s teeth showed hardly any wear. This argument is no longer taken seriously, because theropods replaced their teeth quite rapidly. Ever since the first discovery of "Tyrannosaurus" most scientists have agreed that it was a predator, although like modern large predators it would have been happy to scavenge or steal another predator's kill if it had the opportunity.