Snake
This NPC can be found in
Zangarmarsh (237), Dustwallow Marsh (168), The Black Morass (81), Feralas (75), Westfall (74), Zul'Drak (67), Silverpine Forest (51), Sholazar Basin (29), Sunken Temple (27), Maraudon (26), Wailing Caverns (21), Eversong Woods (19), Dire Maul (16), Tol Barad (13), Howling Fjord (13), Gilneas (11), Ghostlands (11), Northern Stranglethorn (9), The Shattered Halls (9), Gundrak (7), Zul'Gurub (6), Sethekk Halls (6), Loch Modan (4), Terokkar Forest (4), Black Temple (3), Hillsbrad Foothills (2), Nagrand, The Steamvault.