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Researchers say marmoset monkeys call each other by
, similar to how humans recognize each other. The 20-cm-long primates are
to South America. Scientists from the Hebrew University of Jerusalem studied the
interaction of 10 marmosets. The research
discovered that the animals used
calls for other monkeys in their group. Dr David Omer, co-author of the
, said marmosets are the first non-human
known to use names. The researchers put the marmosets in a
of pairings. They then used artificial intelligence to analyze more than 50,000 monkey
. This allowed the
to determine the animals had names for each other.
