Tennie, Claudio
Völter, Christoph J. http://orcid.org/0000-0002-8368-7201
Vonau, Victoria
Hanus, Daniel
Call, Josep
Tomasello, Michael
Article History
Received: 22 June 2019
Accepted: 8 September 2019
First Online: 23 September 2019
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: All applicable international, national, and/or institutional guidelines for the care and use of animals were followed. Animal husbandry and research complied with the ‘EAZA Minimum Standards for the Accommodation and Care of Animals in Zoos and Aquaria’ and the ‘WAZA Ethical Guidelines for the Conduct of Research on Animals by Zoos and Aquariums’ respectively. This study was approved by the ethics committee at the Max Planck Institute for Evolutionary Anthropology and Zoo Leipzig.