How exactly does one go about making a creature friendly? To use as a pet, or something of the sort. I tried removing their fight AI, but that didn't seem to have any effect. I also looked at the friendly creatures in game, the Mudcrab Merchant, Creeper, and Corky, but I didn't anything particularly different from them and other creature of the sort.

I had originally thought it might be scripting, but Creeper was the only one with a script attached to him, and looking over it it seemed to have no relation to what I want to do.

So what did I miss?