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.
References: Poole & Granli 2021. (Full reference list)
This behavior occurs in the following context(s): Advertisement & Attraction, Affiliative, Coalition Building, Social Play