The ability of the proboscis to change its position depending on which part of its body it is washing suggests complex tool use, similar to the behavior of other species such as crows. It is noteworthy that Mary prefers to use a 24 mm diameter hose and washes more frequently on the left side.
The study suggests that because trunks resemble trunks, elephants can intuitively understand how trunks work.
This unique behavior provides another example of animal tool use, challenging the idea that such skills are rare.
Source: Ferra
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