Azure Whelpling

The Azure Whelpling item teaches how to summon an Azure Whelping, a dragon whelpling small pet that follows you around, meaning it is a non-combat pet and will not aid you in battle.

Source
Azure Whelpling drops from Blue Dragonspawn, Blue Scalebane, Draconic Magelord and Draconic Mageweaver in Azshara. This drop possibility was added in Patch 2.3.

The dragonspawn here are elites and in the level range of 51-53, so it is certainly the most difficult of the Whelpling pets to farm. People who are used to farming in Outland will have no trouble with them however.