Using the trunk to briefly grasp the leg of another. This behavior is adopted by different age/sex groups in different contexts. It is, perhaps, most commonly observed in Social Play when an individual, typically a calf, juvenile or adolescent tries to stop the forward movement of a playmate.
During Courtship, males may grasp the leg of an estrous female to slow her forward movement, so that he may attempt to Mount her. Begging calves may grasp their mother's hind-leg to try to get her attention or to persuade her to stop so that they may Suckle.
References: Poole & Granli 2021. (Full reference list)
This behavior occurs in the following context(s): Calf Nourishment & Weaning, Courtship, Social Play