Yellow & Black Felboar

There are 2 tameable creatures with this look.

Yellow & Black Felboar
Can Be Tamed
Blasted Lands
Retains its original name after taming.
Appears roughly east (and across the road from) Dreadmaul Post and north of the Dark Portal area. It used to be a Black Boar. Grunter only appears in the original, pre-"Iron Horde Invasion" phase of the zone. Speak to Zidormi, in the passage to the Swamp of Sorrows, to access the pre-invasion phase.
Can Be Tamed
25-30Shadowmoon Valley - Outland
* 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.