Cooke, Gavan Michael, and Belinda M Tonkins. “Behavioural Indicators of Welfare Exhibited by the Common European Cuttlefish (Sepia Officinalis)”. Journal of Zoo and Aquarium Research 3, no. 4 (October 31, 2015): 157–162. Accessed April 18, 2024. https://www.jzar.org/jzar/article/view/142.