... A curious compliment. He doesn't think anyone has ever complimented his teeth before? Still, Wrathion glances around warily to make sure nobody has appeared to overhear this -- either the part about Anduin being royalty or the part about his dragon form.

"... Thank you," he manages, faintly bewildered. Is this a common compliment? Do people compliment teeth regularly? "You have excellent hygiene yourself."

Is that a good return compliment? It somehow doesn't feel like one.

"Something we have in common, along with a strong will and a fondness for research."

Stubbornness and obsessiveness.