English: Supplemental Movie 1 Prior to the start of this clip, a victim, JK (at first off-camera) rumbles and roars in response to an identifiable stimulus (a bull elephant roaring in a nearby, unrelated camp). MP, the bystander rumbles in response, then initiates contact by running toward JK. She makes physical contact by touching JKs face following a chirp sequence. Both individuals vocalize when within trunks reach of each other. In this interaction, the most notable vocalizations are rumbles, trumpets, and chirps. Also, both elephants put their trunks to or in each others mouths.