Grasping a clump of grass with the trunk and sweeping it up and against the ridges on the underside of the trunk to remove the soil clinging to its roots. Alternatively, holding the clump in the trunk and sweeping is against the chest, between the fore-legs. We are not sure what age this technique is acquired.
References: Poole & Granli 2021. (Full reference list)
This behavior occurs in the following context(s): Foraging & Comfort Technique