The sound of growling greeted them as they stepped into the forbidden third floor, and Percy flinched so hard that if you'd asked any of the other three Weasleys in that split second whether they thought he was about to bolt, they'd have all said definitely. But he didn't, despite the fact that entering Forbidden territory was clearly frightening him a great deal more than Fluffy was. Rather, he took a step forward, and said, "Ron, what did you say Hagrid said about the dog?"