Isle of Dorn; The Ringing Deeps; Hallowfall; Azj-Kahet
Has a chance to spawn when you dig up a patch of Disturbed Earth around any of the main Khaz Algar ('The War Within') zones. To unlock this you need to complete the quest Everyday I'm Snufflin in The Ringing Deeps.
Level scaling: In Shadowlands most NPCs will scale with the Hunter's level, within the constraints of their level range. Hunters can tame regular NPCs up to 2 levels higher than them, but can only tame elite NPCs of the hunter's level or below.