Ants teach by running in tandem
Ants in a tandem run. Credit Nigel Franks and Tom Richardson.
Certain species of ant use a technique known as tandem running to lead another ant from the nest to a food source. Signals between the two ants control both the speed and course of the run. It is believed to be the first time a demonstration of formal teaching has been recognised in any non-human animal.
This behaviour indicates that it could be the value of information, rather than the constraint of brain size, that has influenced the evolution of teaching.
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