Orange Infernal Hellhound w/ White Flames & Green Belly
Untameable look : This look is not known from a tameable creature.
Forsaken hunters automatically know how to tame undead creatures. Hunters of other races must learn the skill from a Simple Tome of Bone-Binding which is a rare drop from miscellaneous Elite NPCs throughout Maldraxxus and its associated dungeons: Plaguefall and the Theater of Pain.
It's possible this unusual look is due to an error in the way it is composed and it may be fixed in the future.
Listed as tameable, but says that it cannot be tamed when you attempt to.
*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.