Twisting the distal portion or tip of the trunk back and forth. Most often observed in situations where an elephant is apprehensive or unsure of what action to take.
References: Douglas-Hamilton 1972: ch 6; Poole 1999a; Poole & Granli 2003; Poole & Granli 2011; O’Connell-Rodwell et al 2011 [Trunk wrap]. (Full reference list)
This behavior occurs in the following context(s): Ambivalent, Attentive