One thing that's always fun to write is the "well, yes, but actually no" kind of cultural misunderstandings. The things about a people that aren't exactly incorrect, but the grain of truth in them is worded so weirdly that the statement itself is completely wrong.
For the Unfinished Book, I had a random idea of a nomadic people who keep dogs, and choose their leader by an informal public vote - while there's ceremonies involved in aknowledging the new leader, and often the new chief is the offspring of a previous one, the real leader of a clan is simply the one that most people agree should be the one to lead. They also famously rever their dogs so much that people like to say that even the dogs get to vote on who the new chief should be - or even that they let the dogs choose the leader, and the people themselves have no say in the matter at all.
If one of the nomads themselves is asked about it, they'll respond with a deeply confused, mildly offended look and contradicting answers. Some say that of course the dogs don't influence choices like that, and some will say that of course the dogs' opinions are taken into consideration. Outsiders get the idea that whatever the truth is, half of the nomads are blatantly lying to cover it up, for some reason or another. But technically speaking, neither of the contradicting stands is wrong.
The matter is, the dogs aren't making the choices of who should lead the clan. They do, however, observe whom the people themselves regard as a leader. As social pack animals bred and raised alongside humans, they can tell by body language whom people actually respect and yield to, and what the dogs do and whom they obey is a visible indicator of the clan's unspoken common opinion.
If a clan chief dies, his son can try to fashion himself into the next chief and command people around, but people observe that the dogs look to his mother for her permission to obey him when he orders them to move, everyone in the clan knows who's really calling the shots. The people won't follow a leader whom the dogs don't obey, because the dogs don't respect a leader whom the people don't respect.