A short (<1 second="" tonal="" vocalization="" that="" is="" almost="" always="" followed="" by="" a="" rumble="" without="" an="" exhalation="" the="" rev="" has="" harmonic="" structure="" and="" appearance="" similar="" to="" short="" but="" its="" fundamental="" frequency="" 50-90="" hz="" significantly="" higher="" revs="" are="" very="" rarely="" heard="" in="" wild="" little="" known="" about="" their="" usage="" p="">

References: Leong et al 2003; Poole 2011. (Full reference list)


This behavior occurs in the following context(s): Affiliative, Calf Reassurance & Protection


Context: Calf Reassurance & Protection (1)

Little E is 14 days old and is being looked after by Lorato, who has been playing with him and trying to Mount him. As she walks with him she sees us and touches him Trunk-to-Mouth. Little E making a Snorting Revving sort of sound that appears to come from his mouth rather than his trunk. (Maasai Mara, Kenya)