Volpin

Volpin is a fox located in mid-western Suramar, east of the Feathermane Hunting Grounds, during Volpin the Elusive (quest). Rare and elusive, he is the last of his kind in the Broken Isles and is the target of an exclusive hunt organized by a group of nightborne nobles seeking to claim his pelt. Upon learning this, adventurers send their champions to gather information about the hunt before traveling to Suramar to interrupt it. After the adventurers defend Volpin from a group of attacking Nightborne Fox Hunters, the grateful fox joins them as the Reins of the Llothien Prowler mount.

Needs to be found at, then defended from the Nightborne Fox Hunters for Volpin the Elusive (quest). He can be quite hard to find, as he is initially not targetable and his location is not marked on the minimap.