Proceratosaurus is the earliest known relative of the tyrannosaurus, unlike its closest cousin, the Guanlong, the Proceratosaurus prefers open spaces as opposed to dense jungles. And also unlike its cousin, the Proceratosaurus lacks venom and instead uses numbers to take down prey, which normal consists of tiny to small sized creatures and occasionally they will work together to attack a larger target than themselves. The Proceratosaurus typically can be found near warm, rocky coastlines.