Plaguehound
From WoWWiki
A level 55-56 darkhound found in the middle of the Eastern Plaguelands.
Plaguehounds as a Quest Objective
Tirion Fordring considers them a nuisance and wants them exterminated. 5 Plaguehounds must be killed, along with 20 Plaguehound Runts and 5 Frenzied Plaguehounds, for the quest
[56] Demon Dogs
