Orangutans (Pongo pygmaeus) Remember Old Acquaintances

  title={Orangutans (Pongo pygmaeus) Remember Old Acquaintances},
  author={Yuki Hanazuka and Naoki Shimahara and Yukie Tokuda and Akira Midorikawa},
  booktitle={PloS one},
Many social animals can discriminate between familiar and unfamiliar faces. Orangutans, however, lead a semi-solitary life and spend much of the day alone. As such, they may be less adept at recognizing conspecifics and are a good model for determining how social structure influences the evolution of social cognition such as facial recognition. The present study is the first report of whether orangutans can distinguish among individual faces. We adopted a preferential looking method and found… CONTINUE READING
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A Russon
Current Biology • 2009

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