I just tamed a lvl 20 theri and it took 1hr and 200 narcotics. This thing was a pain in the bootycheeks to tame but well worth it. It gathers a crap tone of berries, rare flowers, rare mushrooms, and also a good amount of thatch/wood. I recommend having around 50-70 tranq darts if you want to knock out a high lvl theri.

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