"Large, dimwitted, and capable of crushing boulders with a single punch, Orcs are not to be trifled with. Facing an Orc in combat is tantamount to a death wish; should you provoke one's ire, I advise you to simply run or, failing that, attempt to trick them into looking the other way. They live in tribes, preferring mountainous regions of the world away from civilized societies, and are typically led by two figures: A chief, often an ogre (an Orc mutated by magic or by birth), and a shaman."
-Excerpt from Volo's Guide to Ozelan Beasts