Therizinosaurs, or tickle chicken, is very territorial and does lots of damage.

A good strategy is to stand on top of a very steep rock or a small cliff and start shooting. Make sure that it's steep enough so that the therizino won't climb over it.

Another strategy is to lure him into a 2x2x2 trap. Make sure that it's made out of stone, or metal if you can afford it.

When it's down, feed him berries or crops. Make sure to bring hundreds of narcotics, because the therizino's torpor drops quickly.

Once tamed, you probably don't have to worry about him dying, as it's power rivals theropods like the rex or the spinosaur.

More Therizinosaurus Taming & KO Tips