I am a mobile player I play on the official server (Alpha) and my username is Doglife so if you see me say hi. I tamed one of these easily. My friend held me in the air with his pteranodon while I unloaded tranqs on the Theri. I didn’t miss a shot and soon enough the Theri went night night. We gave him a soothing balm and a bunch of mejoberrys and BOOM we have our self a Theri named Snuffy. You can tame almost any creature this way.