Taming a pachy is easy because all you need is bolas to trap it, tranq arrows or a club to knock it out, narcotics or narcoberries to keep it knocked out (the difference in narcotics and narcoberries are that the narcotics are stronger then narcoberries). Then feed it with mejoberries to tame it since mejoberries are commonly liked with herbivores.
FOR NEW PLAYERS!!!UP FOR PLAYERS TO SEE!!! Do not attack unless you have an Ebola (sorry about the spelling) and knock it out with your fist or club. I used berries and soothing balm. Good luck survivors!!
Pachy' don't deal large amounts of damage but their attacks will deal torpor. When fighting in the wild don't engage packs large then 3 if you only have basic weapons because they will knock you out quickly then have their way with you.