Bose, A. P. H.; Dabernig-Heinz, J.; Oberkofler, J.; Koch, L.; Grimm, J.; Sefc, K. M.; Jordan, A.: Aggression and spatial positioning of kin and non-kin fish in social groups. Behavioral Ecology 34 (4), pp. 673 - 681 (2023)
Scientists studying a rare population of tool-using chimpanzees have found that aging can have a profound impact on their abilities—but not all chimps decline equally.