"Ugh?", "Ogh!", "???": The Different Cultures of the Orcs

[Balin999]

I just remembered that orcs aren't even very loyal to their chiefs.
I can remember the scene where Shagrat and Gorbag think of the "good old times", rummaging through the land with "a few trustfull lads" without a "chief".

So I guess they didn't have fixed hirachic (spelling ?) structures, meaning that a chief could easily be beheaded by another orc who is the heir of the "chief" immediately, until he gets beheaded or stabbed or whatever by the next one. (or a clan living on their own)

So, in a way orcs are more similar to animals, with the only difference that they can talk. I mean, there has always been treason, but no other race than the orcs is arguing and fighting themselves that often.
Maybe that's why they get along well with wolves. I mean, they also have an Alpha-male who can change rather often.