Opening the mouth while touching it to another elephant’s mouth who is also displaying Open-Mouth. This behavior may be displayed by adult females during Greetings and Coalition Building, during High-Fiving, and by all age/sex classes during bouts of Sparring.
Adult males gm0016 and gm0049 engage in a bout of Sparring which includes Open-Mouth-to-Open-Mouth. (Gorongosa, Mozambique)
