Unused look : this look is not available in the game.
The texture file for this look is not currently attached to this model, but would work perfectly if copied to it. We include it here out of interest. The texture's current location in the game database is: Creature/EliteHippogryph/EliteHippogryph.blp. The look was created for the Emerald Hippogryph mount, which seems to be almost identical to the hippogryph models introduced in Legion.
Special Skill Required : In order to tame members of this family, you must use the Tome of the Hybrid Beast to learn Hybrid Kinship. This is only available for purchase after (i) unlocking all artifact traits on the Beast Master artifact, Titanstrike and (ii) completing the Hunter Order Hall campaign for 7.2, which is gated and will be fully unlocked around 14 June. The tome is Bind on Account and may be passed to Hunter alts that are level 110 but haven't otherwise met the criteria.