Alliance hunters can tame this snake in the usual way, but it is friendly to Horde and can only be tamed by Horde hunters using the toy "N'lyeth, Sliver of N'Zoth" while in War Mode. Moult accompanies Stalker Mojica around the outside of Dazar'alor and probably shouldn't be tameable.
*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.