Snake
This NPC can be found in Zangarmarsh (217), Zul'Gurub (88), The Black Morass (68), Dustwallow Marsh (66), Wailing Caverns (40), Desolace (29), Eversong Woods (20), Un'Goro Crater (18), Feralas (18), Maraudon (23), Westfall (15), Howling Fjord (10), Ghostlands (9), Silverpine Forest (7), Gundrak (6), Black Temple (4), Nagrand (2) and Coilfang: The Steamvault (1).