The Perentie is the 4th largest lizard in the world, after the Komodo Dragon, Salvadori's Monitor, and the Water Monitor. But its cousin was the largest lizard in the world. That's right, Megalania's closest living relative is not the Komodo Dragon, but the Perentie. Now that Megalania is extinct, the Perentie is now the apex predator of the Outback. The Perentie eats insects, reptiles, birds, eggs, small mammals, and carrion.