An elephant bouncing the distal and outer portion of a curled trunk on the ground. The Trunk-Bounce seen in Asian elephants is a common display which produces a clearly audible thumping or popping sound. When aroused or threatened Asian elephants may repeatedly pop or bounce their trunks on the ground. In African elephants musth males and Charging females may bounce their trunks on the ground as a threat at very close range.
In most cases the Trunk-Bounce is not such a sharply defined movement nor as audible as in Asian elephants, though we do have examples of clearly audible and very defined Trunk-Bounce from Charging adult females.
References: Kahl & Armstrong 2002; Poole & Granli 2003; Poole & Granli 2011 [Trunk-Bounce-Drag]. (Full reference list)
This behavior occurs in the following context(s): Attacking & Mobbing