The pachy is a tame that isn't worth having. It can be a special low lvl way of run, transport, and lay eggs THAT TAME PARACERS but useless in a whole lot of other ways like low stamina and health, weak, not a good way of knocking things out cause IT MIGHT KILL THEM. If you want a low lvl tame that knocks things out use a scorpion. Scorpions even swim faster than the pachy. scorpions are better Gaurds than the pachy but the pachy knocks things out by giving torpor every shot and the scorpion has poison that doesn't stack (but gives torpor depending on damage) using them both as gaurds is a really good medium level thing. Otherwise don't spend you time taming one unless you have a whole lot.
The first time I heard one of these little critters, I thought, hey is that a goat?! Anyways, they are fun to have around and tamed, as they knock things out and run pretty fast while charging. However, they have considerably low health and stamina, so they can be quite troublesome when low lvl. But who cares, they make goat noises. If only they could eat anything
While not the best fighters pachy's make decent early travel mounts. Their base speed isn't all to high but using the alternative attack will cause the pachy to charge forwards are decent speeds and dealing a fair amount of torpor to what ever they hit. Pumping movement speed and stamina will have you moving around the map with ease.