Vervet monkeys call out when they see a member of an enemy species, with different calls for different predators, so that their friends know what to do--for a leopard, get as high up a tree as you can; for an eagle, dive for cover. It is an instinctive response, however, not something the monkey learns to do, a language that can be changed from generation to generation.
Chimpanzees, on the other hand, our very close relatives, apparently think about it before making an alarm call--think about what it is they've seen and who needs to know, according to this report in the Guardian of a field experiment conducted in the Budongo forest, Uganda.
Chimpanzees, on the other hand, our very close relatives, apparently think about it before making an alarm call--think about what it is they've seen and who needs to know, according to this report in the Guardian of a field experiment conducted in the Budongo forest, Uganda.
