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Primate Behavior

Page 26

26) Scientists think one purpose of such a face is that it permits other animals to get a very clear view of all facial expressions. The yawn has several meanings for primates. A yawning animal is more likely to be nervous than tired. A golden snub nosed monkey yawns, showing large canine teeth.

Notes: A golden snub nosed monkey yawns, showing large canine teeth.
Scientific name: Rhinopithecus roxellanae
Most adult male higher primates have large canine teeth. Humans are an exception.
Photo © by: Columbus Zoo

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