The idea that bonobos and chimpanzees can speak the same language is absolutely thrilling. Even though bonobos are chimps, I always saw the two species as very distinct; this discovery really resets my worldview on multiple levels.
I'm not an expert by far, but aren't many animal "gestures" shared by multiple species: lying down to surrender, standing on hind legs to threaten, showing teeth, etc...?
> The taxonomical genus Pan (often referred to as chimpanzees or chimps) consists of two extant species: the common chimpanzee and the bonobo.
It's like "crow", which can refer to a particular species (e.g., in England a crow, unqualified, usually means a carrion crow), or to the genus Corvus, which includes e.g. ravens and rooks.
