You don't need to tell the Peacock Dragon that it's adorable. It knows. But it likes to hear it all the same. It struts around your island with its marvelous purple coat and round golden eyes, gazing reproachfully at other dragons who puff out their chests as the Peacock Dragon passes.
Have you ever had a Peacock Dragon roll its eyes at you? It's a dreadful experience. I told my Peacock Dragon once that I thought its tail looked exceptionally ornate that day; it scoffed and rolled its eyes, then strutted off. I died a little inside.
As Peacock Dragons mature into adulthood, their beaks extend, allowing them a wider array of olfactory senses. As their ability to smell improves, it also increases their desire to smell good. Peacock Dragons like to roll around in flowers on their Island to better their personal perfume.
Other dragons would dare not try to upstage an Epic Peacock Dragon, as they are incredibly charismatic (and incredibly vain) creatures. If an Epic Peacock Dragon feels it is being outshadowed, it will ferociously flap its feathers in a harried plea for attention. Of course, the Epic Dragon is so magnificent, this ploy usually works.