Walldén, William, Bim Boijsen, Alexander Larsson, Leonie ter Horst, Ellen Holm, and Sofie Björklund. “A Potential Case of Copper-Related Sand Eating Behaviour in Grevy Zebras Equus Grevyi at Kolmården Wildlife Park ”. Journal of Zoo and Aquarium Research 14, no. 2 (April 30, 2026): 80–85. Accessed April 30, 2026. https://www.jzar.org/jzar/article/view/993.