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

Crag Coyote Fang

NPC	Level	Zone	Chance
Crag Coyote	35 - 36	Badlands	80.0%
Feral Crag Coyote	37 - 38	Badlands	80.0%
Elder Crag Coyote	39 - 40	Badlands	80.0%
Rabid Crag Coyote	42 - 43	Badlands	80.0%

Quest	Level	Side
Badlands Reagent Run	39	Horde
Badlands Reagent Run	39	Both