About the Authors

Jen Wathan

j.wathan@sussex.ac.uk (JW); karenm@sussex.ac.uk (KM)

Affiliation Mammal Communication and Cognition Research, School of Psychology, University of Sussex, Brighton, United Kingdom

Anne M. Burrows

Affiliation Centre for Comparative and Evolutionary Psychology, Department of Psychology, University of Portsmouth, Portsmouth, United Kingdom

Bridget M. Waller

Affiliation Department of Physical Therapy, Duquesne University, Pittsburgh, Pennsylvania, United States of America

Karen McComb

j.wathan@sussex.ac.uk (JW); karenm@sussex.ac.uk (KM)

Affiliation Mammal Communication and Cognition Research, School of Psychology, University of Sussex, Brighton, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JW AMB BMW KM. Performed the experiments: JW AMB. Analyzed the data: JW AMB BMW KM. Contributed reagents/materials/analysis tools: AMB. Wrote the paper: JW AMB BMW KM.