The Flame Whipper a Stoker class exclusive dragon released with the The Secret of Leviathan expansion on March 2nd, 2017. It can be purchased for 750 gems (600 for members) or awarded for finishing a certain quest.
"This dragon seems to be like a salamander like dragon. This reptilian dragon was first found in the impossible island. They have a powerful fireball and have a poisonous and paralysing sting! When having to flee they can easily drop their tails as a defence tactic to get safely from bigger predators. They seem to eat fruit from the impossible islands and I'm guessing other forms of food as well. They have big suction Cup like toes that help them stick to surfaces as shown in the part where you meet the first flame whipper."