Kendallzemp's Comments

 I'm looking up all these new Island Expedition pets on wowhead, and no one is saying much about where they come from.   For the Bloodstone Tunneler, one guy wrote (on Wowhead) that it was "rewarded from" a normal difficulty expedition.  A comment on this site said much the same thing, so I guess you get it in the bag of loot at the end.   Wowhead does call them "drops", but I suppose that could refer to the loot bag.  

I also want to know if it is a Horde only pet.