We often turn to dogs and to chimpanzees to understand our species. Chimpanzees are our closest relatives (with bonobos), while centuries of selective breeding have turned dogs into a species uniquely suited to comprehend our own social cues.
Evidence has been accumulating for several years that contagious yawning is driven by social cognition. But how? And is it related to empathy?
There are a handful of traits that scientists and philosophers would argue would make us human, including self-awareness and language. Another key part of being human is thought to be our ability to empathize (although I sometimes find myself doubting some humans' abilities to empathize).