so when ever I start on a new server I always tame a small team of these guys just for some protection. I recommend you do this when you are between level 3-15
These guys are great because their poison can slow down enemies wile you run for your life, not mentioned they are pretty easy to tame because you can knock them out with your fists. When you are using them I suggest you have their attack range on high ( if it is not they will not use poison as much)and follow distance on low. When you are a low level you can even store perishable items, like narco berries, in them to have them last longer.