A chimpanzee in Uganda's Kibale National Park | Juergen Ritterbach/Barcroft Im/Barcroft Media via Getty Images

Chimps and Bonobos Use the Same Body Language to Communicate

The shared gestures suggest the primates — as well as humans — may have inherited the traits from a common ancestor.

Bonobos in the Democratic Republic of Congo | Issouf Sanogo/AFP/Getty Images
Big Loud Scratch: In nearly all cases, this gesture among bonobos and chimps communicated that the signaler wished to initiate grooming. | Kirsty Graham
Rocking: In chimps, this move initiated either copulation or genital rubbing. | Kirsty Graham