Chimps are more right-handed for slinging bull than poop

A study published in Cortex and described in Science Daily says chimps show a stronger right-handedness for gestures than for manual tasks.

As one of the authors said, "this finding provides additional support to the idea that speech evolved initially from a gestural communicative system in our ancestors. Moreover, gestural communication in apes shares some key features with human language, such as intentionality, referential properties and flexibility of learning and use".