Baenalkins are one of the oldest species of creatures, existing for as long as anyone can remember. These creatures are native to the highest peaks of the mountains, far above where any normal mage is able to travel. These creatures are considered as pests in the few towns that they can be naturally sighted in, due to their harsh attitudes and inability to submit to taming. There has only been one incident of these creatures being controlled, and as a long-lost legend, any hope of actually controlling them is lost.
This young hatchling is not a dragon like you expected. It is quite fiesty though, and emits a strong heat. The barb on its tail seems quite dangerous. It has grown now and it also now sports a strong pair of wings. Its amazingly strong compared to most other hatchlings and its heat allows for it to scare off any challengers. It also has an attitude to match.
Your hatchling has grown and it now also sports a mane of fire. It stands about twice as tall as you, and is able to easily fly just as well as your dragons. You have attempted to ride it, but the flames it bares and the strong willpower it has thwarted your attempts.