I don’t take any chances with a Theri…trap it in a stone box…

2x2 stone foundation.

16 stone doorways…..and a ramp for it to rampage up and fall in. Build your trap somewhere safe…..or as safe as possible because you’re going to be here a while.

Use a flyer that can take a few hits and lure the beast up the ramp. Once trapped get to knocking it out.

That was the easy bit…

Keeping a Theri asleep is a marathon.

You can pre-prepare a bunch of narcotics but I find it best to simply bring along a gatherer in a cryopod ready to go berry picking. A Moschops is good as it can usually fight off pests…they are also very quick at helping you construct a temporary shelter to bolt on to your trap as taming a Theri will often take you well into the night and hypothermia is a thing.

Use batches of 100 Narcoberries to keep the Theri asleep.

Once tamed you’ll have an epic mount. Their harvesting skills are already well documented on here so I’ll provide another interesting detail…

…almost all other creatures are scared of them and will not openly attack you, this includes two of the most annoying creatures in the game…..Kapros and Microraptors! This makes swamps significantly safer as Sarco/Baryonyx and Boa will ignore you as well.