Items, NPCs, quests, objects and spells of patch 1.12.1, read live from the realm itself.

Searing Tongue

NPC Level Zone Chance

Searing Hatchling 41 - 42 Dustwallow Marsh 25.0%

Searing Whelp 42 - 43 Dustwallow Marsh 25.0%
Quest Level Side

Identifying the Brood 43 Both

NPC	Level	Zone	Chance
Searing Hatchling	41 - 42	Dustwallow Marsh	25.0%
Searing Whelp	42 - 43	Dustwallow Marsh	25.0%