Orangutans (Pongo abelii) make flexible decisions relative to reward quality and tool functionality in a multi-dimensional tool-use task

• Isabelle B. Laumer ,

  Roles Conceptualization, Formal analysis, Methodology, Writing – original draft

  * E-mail: isabelle.laumer@univie.ac.at

  Affiliation Department of Cognitive Biology, University of Vienna, Vienna, Austria

  http://orcid.org/0000-0002-1597-0072

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• Alice M. I. Auersperg,

  Roles Conceptualization, Writing – review & editing

  Affiliation Messerli Research Institute, University of Veterinary Medicine, Vienna, Medical University of Vienna, University of Vienna, Vienna, Austria

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• Thomas Bugnyar,

  Roles Writing – review & editing

  Affiliation Department of Cognitive Biology, University of Vienna, Vienna, Austria

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• Josep Call

  Roles Formal analysis, Writing – review & editing

  Affiliations School of Psychology and Neuroscience, University of St. Andrews, St. Andrews, United Kingdom, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany

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