Elephant Trunk Wrinkles: A Telling Feature of Trunkedness

Researchers have found that the wrinkles on an elephant's trunk can reveal its preference for using the trunk's right or left side, a trait termed 'trunkedness'. This preference develops over time and affects the distribution of wrinkles, hinting at both behavioral and genetic influences.

Researchers have uncovered a fascinating link between trunk wrinkles and 'trunkedness' in elephants, a phenomenon indicating whether these majestic mammals prefer utilizing their trunk towards the right or left side. This preference gradually develops over an elephant's lifetime, influencing wrinkle distribution.

The study, conducted by Humboldt-University of Berlin researchers and published in Royal Society Open Science, reveals that whiskers and hair lengths on the trunk's skin coincide with trunkedness, which reflects behaviors and physical adaptations. Baby elephants do not possess this trait at birth but acquire it through age and habitual trunk bending.

Data collected over three decades shows that Asian elephants exhibit 1.5 times more trunk wrinkles than African elephants. These variations highlight a fascinating interaction of behavior and potential genetic factors shaping the unique and dynamic functionality of elephant trunks. The study's specimen collection was undertaken by the Leibniz Institute for Zoo and Wildlife Research, Berlin.