Funding for this research was provided by:
Memphis Zoo (CAN GRANT 2011)
Text and Data Mining valid from 2019-11-11
Received: 30 May 2019
Accepted: 22 October 2019
First Online: 11 November 2019
Ethics approval and consent to participate
: All animal procedures were reviewed and approved by the Research and Ethics Committee of the Universidad Autónoma de Madrid and Comunidad de Madrid and performed in accordance with the Spanish Animal Protection Regulation, RD53/2013, which conforms to the European Union Regulation 2010/63.
: Not applicable.
: The authors declare that they have no competing interests.