Experiment video: Bonobos can mentally track multiple members of their social circle (VIDEO)
Caption
A series of hide-and-seek experiments with a bonobo named Kanzi shows for the first time that apes can mentally keep track of multiple familiar humans at once, even when they are out of sight.
Kanzi could also recognize caregivers from their voices alone, an ability never before tested on bonobos.
Credit
Johns Hopkins University
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