Irie, Naoko
Hiraiwa-Hasegawa, Mariko
Kutsukake, Nobuyuki
Funding for this research was provided by:
Japan Society for the Promotion of Science (22-6613)
Article History
Received: 28 April 2018
Accepted: 30 September 2018
First Online: 22 October 2018
Change Date: 20 December 2019
Change Type: Correction
Change Details: The article Unique numerical competence of Asian elephants on the relative numerosity judgment task, written by Naoko Irie, Mariko Hiraiwa‑Hasegawa and Nobuyuki Kutsukake, was originally published Online First without Open Access.
Compliance with ethical standards
:
: Our study was approved by the Director of Ueno Zoo, after it was evaluated by the research and education committee at the zoo. Ueno Zoo is a member of the Japanese Association of Zoos and Aquariums (), which also has an animal welfare committee to confirm that Ueno Zoo meets their animal welfare standards as well. Since it was approved by the zoo, the current study meets the animal welfare standards of Japan.
: The authors declare that they have no conflicts of interest.