Toad
This NPC can be found in Nagrand (93), Dustwallow Marsh (75), Un'Goro Crater (37), Darnassus (32), Teldrassil (31), Wetlands (30), Swamp of Sorrows (11), Ghostlands (11), Eversong Woods (8), Silverpine Forest (8), Howling Fjord (7), Zul'Gurub (6), Black Temple (12), Arathi Highlands (2) and Coilfang: The Steamvault (2).