Changewing is one most unique kind of dragon which has ability to change his skin scales appearance colours, whenever he stay in everyplace, if you know the chameleon? yes it's absolutely like this, Changewing did this as camouflage, so you will need keen eyes to spot one of them.
Changewing is a funny dragon, because he has behavior to mimic someone or everything he saw, he loved to imitate moves and viking's doings, this like what Bork the bold gone through, that's when Bork the Bold went picnic and built the campfire, he was followed by Changewing secretly, and he was hide and change his skin near of home and boat, but Bork felt something weird among him, but he didn't see anything because Changewing played as camouflage. And Changewing also hide in the wood of tree then he blow up Bork with his mouth, Changewing was so naughty dragon.
Book of Dragons, Mystery Class Changewing
Other capabilities of Changewing that he can spit acid instead of fire, that he use to burn it's foe/predator or when he was threatened. It's spitting acid is very dangerous because it can make wood molten when he spit it that wood or other potential threat. Changewing has large of wings has also horns in his face and something like antennae as an appendage like his ears, If I notice his body, I think Changewing's shape it's more likely one of tropical plants, with his long tail like plant too.