Can be tamed.

Family:Lesser Dragonkin
Level:35 Boss Elite
Zone:Terrace of Endless Spring (Raid)
Requires Cloud Serpent Taming.Cloud Serpent Taming
You must learn a special skill to tame Cloud Serpents, which is different to the skill required to tame other Lesser Dragonkin. Pandaren hunters gain the skill automatically, but hunters of other races must learn it from the tome How to School Your Serpent, which may purchased from San Redscale at The Arboretum in The Jade Forest. You require Exalted standing with The Order of the Cloud Serpent to read this tome, but the learned skill is account-wide. You can even purchase and read this tome on a non-hunter character.
Location & Notes:

Located in Terrace of Endless Spring (Raid). Tsulong is a powerful spirit being and not a regular beast. This ID is for his black, attackable form.Once tamed, Tsulong will respawn as a raid boss about 30 seconds later.