About the Authors

Lisa Horn

lisa.horn@univie.ac.at

Affiliations Department of Cognitive Biology, University of Vienna, Vienna, Austria, Clever Dog Lab Society, Vienna, Austria

Ludwig Huber

Affiliations Department of Cognitive Biology, University of Vienna, Vienna, Austria, Clever Dog Lab Society, Vienna, Austria, Messerli Research Institute, University of Veterinary Medicine Vienna, Medical University Vienna, University of Vienna, Vienna, Austria

Friederike Range

Affiliations Clever Dog Lab Society, Vienna, Austria, Messerli Research Institute, University of Veterinary Medicine Vienna, Medical University Vienna, University of Vienna, Vienna, Austria

Competing Interests

Altough Royal Canin is supporting the Clever Dog Lab with donations, the authors confirm that this does not alter their adherence to all the PLOS ONE policies on sharing data and materials, as detailed online in the guide for authors.

Author Contributions

Conceived and designed the experiments: L. Horn FR. Performed the experiments: L. Horn. Analyzed the data: L. Horn. Wrote the paper: L. Horn L. Huber FR.