Can be used to help tame large creatures. If you pull out your crossbow or longneck while riding it you can shoot your weapon and its tail needles at the same time allowing you to tank the creature and save tranqs. You would need to level health and melee though.
To knock out this creature you can use a flying creature to reach a tall stone or hill that it won't be able to climb then shot it with your tranqs, if and when it suits spikes at you move back slightly to dodge them. Good luck.
These are my favorite mounts. They're the beaver of Scorched Earth. They gather wood very well. The initial carry weight isn't too bad& neither is the health for small fights. So they're also decent battle mounts if leveled properly. One of their biggest assets is their ranged quill attack. In addition to a small amount of damage, it also deals torpor. Not a lot, but could be helpful in aiding knocking dinos out. Overall, they're a great mount in my opinion. They're biggest downside is their slow movement speed. Getting from A to B can take a while. Leveling in Health, Melee, & Movement Speed is highly recommended.