Funding for this research was provided by:
Text and Data Mining valid from 2019-06-19
Received: 13 December 2018
Revised: 10 June 2019
Accepted: 12 June 2019
First Online: 19 June 2019
Compliance with ethical standards
: JP is the founder of Think Elephants International, a US public charity that focuses on elephant conservation. CS is co-founder of the Banana Orchard Project in Kanchanaburi, an ecotourism venture for captive elephants in Thailand. CS’s involvement in the latter project did not begin until after the current study was completed.
: All applicable international, national and/or institutional guidelines for the care and use of animals were followed.