Toad
This NPC can be found in Nagrand (88), Dustwallow Marsh (70), Un'Goro Crater (37), Darnassus (32), Teldrassil (31), Wetlands (30), Eversong Woods (13), Swamp of Sorrows (11), Silverpine Forest (7), Howling Fjord (7), Ghostlands (6), Zul'Gurub (6), The Underbog (6), The Barrens (5), Black Temple (5), Terokkar Forest (4), Arathi Highlands (2), The Steamvault (2), Undercity (1) and Shattrath City (1).