When the rats attack, they're so annoying that it's hard to get away from them. The only thing that can stop them is the dragon's scales, and the only way to use them is to use your own energy. The rats are so bad that they can't even get away. They're like the mad king of rats, and they'll kill you if you try to stop them. They don't rely on the other rats for their strength. They can just use their own energy to do whatever they want. They think they've convinced the rats not to kill them, but the rats are going to take them captive for now, so they can listen to their language.