How many times have you been in a conversation and found yourself trying to figure out what the other person is thinking? It’s quintessentially human, but is thinking about others’ minds uniquely human? And, if not, what can other animals teach us about this phenomenon? Our ability to think about what’s going on inside other people’s heads is called theory of mind. "If I'm trying to predict what somebody's thinking, I'm not thinking about where they're looking or what they're about to do, I'm