"I know different dragons have different skills, and metallic dragons are different than other dragons, but I don't remember how exactly. I didn't really think I'd ever have to solve a dragon puzzle."

Which is a bad excuse, and not one that makes a lot of sense, but what other reason would there be for him to not know everything about everything?

"Well, some people think it's got healing powers. It's very easy to shape, too. Associated with the moon?" Angus squints at the wall, as though it's going to give up some more answers. "Is it possible these are actually werewolves?"